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Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2018	Feb. 12, 2019	Jun. 29, 2018
Document Information [Line Items]
Entity Registrant Name	RUSH ENTERPRISES INC \TX\
Entity Central Index Key	0001012019
Trading Symbol	rusha
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Public Float			$ 1,552,855,317
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Shell Company	false
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		28,236,569
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		8,267,802

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 131,726	$ 124,541
Accounts receivable, net	190,650	183,875
Note receivable affiliate	12,885	11,914
Inventories, net	1,339,923	1,033,294
Prepaid expenses and other	10,491	11,969
Assets held for sale	2,269	9,505
Total current assets	1,687,944	1,375,098
Investments		6,375
Property and equipment, net	1,184,053	1,159,595
Goodwill, net	291,391	291,391
Other assets, net	37,962	57,680
Total assets	3,201,350	2,890,139
Current liabilities:
Floor plan notes payable	1,023,019	778,561
Current maturities of long-term debt	161,955	145,139
Current maturities of capital lease obligations	19,631	17,119
Trade accounts payable	127,451	107,906
Customer deposits	36,183	27,350
Accrued expenses	125,056	96,132
Total current liabilities	1,493,295	1,172,207
Long-term debt, net of current maturities	439,218	466,389
Capital lease obligations, net of current maturities	49,483	66,022
Other long-term liabilities	11,118	9,837
Deferred income taxes, net	141,308	135,311
Shareholders’ equity:
Preferred stock, par value $.01 per share; 1,000,000 shares authorized; 0 shares outstanding in 2018 and 2017	0	0
Common stock, par value $.01 per share; 60,000,000 Class A shares and 20,000,000 Class B shares authorized; 28,709,636 Class A shares and 8,290,277 Class B shares outstanding in 2018; and 31,345,116 Class A shares and 8,469,247 Class B shares outstanding in 2017	458	454
Additional paid-in capital	370,025	348,044
Treasury stock, at cost: 3,791,751 Class A shares and 5,030,787 Class B shares in 2018 and 934,171 Class A shares and 4,625,181 Class B shares in 2017	(245,842)	(120,682)
Retained earnings	942,287	812,557
Total shareholders’ equity	1,066,928	1,040,373
Total liabilities and shareholders’ equity	$ 3,201,350	$ 2,890,139

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Class A [Member]
Common stock, authorized (in shares)	60,000,000	60,000,000
Common stock, outstanding (in shares)	28,709,636	31,345,116
Treasury stock (in shares)	3,791,751	934,171
Common Class B [Member]
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, outstanding (in shares)	8,290,277	8,469,247
Treasury stock (in shares)	5,030,787	4,625,181

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Revenue	$ 5,267,952
Lease and rental	238,238	$ 217,356	$ 208,154
Total revenue	5,506,190	4,713,882	4,214,614
Cost of products sold:
Lease and rental	197,271	183,091	182,040
Total cost of products sold	4,527,921	3,883,946	3,496,602
Gross profit	978,269	829,936	718,012
Selling, general and administrative	705,226	631,053	587,778
Depreciation and amortization	70,489	50,069	51,261
Gain (loss) on sale of assets	297	(105)	1,755
Operating income	202,851	148,709	80,728
Interest income (expense):
Interest income	1,376	891	621
Interest expense	(21,058)	(13,201)	(14,900)
Total interest expense, net	19,682	12,310	14,279
Income before taxes	183,169	136,399	66,449
Income tax provision (benefit)	44,107	(35,730)	25,867
Net income	$ 139,062	$ 172,129	$ 40,582
Earnings per common share:
Basic (in dollars per share)	$ 3.55	$ 4.34	$ 1.02
Diluted (in dollars per share)	$ 3.45	$ 4.20	$ 1
New and Used Commercial Vehicle [Member]
Revenues:
Revenue	$ 3,558,637	$ 2,993,015	$ 2,640,019
Cost of products sold:
Cost of products sold	3,280,966	2,766,461	2,463,124
Aftermarket Products and Services [Member]
Revenues:
Revenue	1,670,052	1,471,266	1,332,356
Cost of products sold:
Cost of products sold	1,049,684	934,394	851,438
Finance and Insurance [Member]
Revenues:
Revenue	20,535	17,988	18,582
Product and Service, Other [Member]
Revenues:
Revenue	$ 18,728	$ 14,257	$ 15,503

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income	$ 139,062	$ 172,129	$ 40,582
Other comprehensive income before tax and net of reclassification adjustments:
Change in fair value of available-for-sale securities		469	32
Other comprehensive income, before tax		469	32
Income tax expense related to components of other comprehensive income		183	13
Other comprehensive income, net of tax		286	19
Comprehensive income	$ 139,062	$ 172,415	$ 40,601

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Class A [Member] Common Stock [Member]	Common Class A [Member] Retained Earnings [Member]	Common Class A [Member]	Common Class B [Member] Common Stock [Member]	Common Class B [Member] Retained Earnings [Member]	Common Class B [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2015	30,304,000			10,093,000
Balance at Dec. 31, 2015							$ 430	$ 288,294	$ (43,368)	$ 599,846	$ (305)	$ 844,897
Stock options exercised and stock awards (in shares)	494,000
Stock options exercised and stock awards							5	6,152				6,157
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan								12,875				12,875
Vesting of restricted share awards (in shares)	6,000			186,000
Vesting of restricted share awards							2	(725)				(723)
Issuance of common stock under employee stock purchase plan (in shares)	137,000
Issuance of common stock under employee stock purchase plan							1	2,531				2,532
Common stock repurchases (in shares)	(934,000)			(1,034,000)
Common stock repurchases									(43,514)			(43,514)
Other comprehensive income											19	19
Net income										40,582		40,582
Balance (in shares) at Dec. 31, 2016	30,007,000			9,245,000
Balance at Dec. 31, 2016							438	309,127	(86,882)	640,428	(286)	862,825
Stock options exercised and stock awards (in shares)	1,219,000
Stock options exercised and stock awards							12	22,355				22,367
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan								15,606				15,606
Vesting of restricted share awards (in shares)	7,000			199,000
Vesting of restricted share awards							3	(1,518)				(1,515)
Issuance of common stock under employee stock purchase plan (in shares)	113,000
Issuance of common stock under employee stock purchase plan							1	2,474				2,475
Common stock repurchases (in shares)				(975,000)
Common stock repurchases									(33,800)			(33,800)
Other comprehensive income											286	286
Net income										172,129		172,129
Balance (in shares) at Dec. 31, 2017	31,345,000			8,469,000
Balance at Dec. 31, 2017							454	348,044	(120,682)	812,557		$ 1,040,373
Stock options exercised and stock awards (in shares)	138,000											126,027
Stock options exercised and stock awards							1	2,742				$ 2,743
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan								18,059				18,059
Vesting of restricted share awards (in shares)				227,000
Vesting of restricted share awards							2	(1,749)				(1,747)
Issuance of common stock under employee stock purchase plan (in shares)	84,000
Issuance of common stock under employee stock purchase plan							1	2,929				2,930
Common stock repurchases (in shares)	(2,857,000)			(406,000)
Common stock repurchases									(125,160)			(125,160)
Other comprehensive income
Net income										139,062		139,062
Cash dividends declared on common stock		$ (7,324)	$ (7,324)		$ (2,008)	$ (2,008)
Balance (in shares) at Dec. 31, 2018	28,710,000			8,290,000
Balance at Dec. 31, 2018							$ 458	$ 370,025	$ (245,842)	$ 942,287		$ 1,066,928

Consolidated Statements of Shareholders' Equity (Parentheticals) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Additional Paid-in Capital [Member]
Stock options exercised and stock awards, tax	$ 294

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 139,062	$ 172,129	$ 40,582
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	185,122	157,951	157,627
(Gain) loss on sale of property and equipment, net	(297)	105	(1,755)
Loss on impairment of assets			8,247
Stock-based compensation expense related to employee stock options and employee stock purchases	18,059	15,606	12,875
Provision (benefit) for deferred income tax expense	5,997	(62,203)	8,331
Excess tax expense from stock-based compensation			294
Change in accounts receivable, net	(7,746)	(29,424)	1,673
Change in inventories	(255,040)	(147,453)	291,773
Change in prepaid expenses and other, net	1,907	(3,383)	24,155
Change in trade accounts payable	18,490	8,964	(22,411)
Draws on floor plan notes payable – trade, net	76,646	19,355	3,989
Change in customer deposits	8,833	8,932	(4,020)
Change in accrued expenses	24,331	12,158	(190)
Net cash provided by operating activities	215,364	152,737	521,170
Cash flows from investing activities:
Acquisition of property and equipment	(238,260)	(209,917)	(196,965)
Proceeds from the sale of property and equipment	6,325	3,968	12,494
Business acquisitions		(2,180)	(681)
Proceeds from the sale of available for sale securities	6,375	325	450
Other	(1,683)	1,241	(4,708)
Net cash used in investing activities	(227,243)	(206,563)	(189,410)
Cash flows from financing activities:
Draws (payments) on floor plan notes payable – non-trade, net	167,812	112,261	(211,802)
Proceeds from long-term debt	156,751	152,563	121,188
Principal payments on long-term debt	(167,106)	(145,038)	(164,940)
Principal payments on capital lease obligations	(12,429)	(12,449)	(23,479)
Proceeds from issuance of shares relating to employee stock options and employee stock purchases	3,926	23,327	8,260
Excess tax expense from stock-based compensation			(294)
Common stock repurchased	(120,558)	(33,800)	(43,514)
Payments of cash dividends	(9,332)
Debt issuance costs		(523)
Net cash provided by (used in) financing activities	19,064	96,341	(314,581)
Net increase (decrease) in cash and cash equivalents	7,185	42,515	17,179
Cash and cash equivalents, beginning of year	124,541	82,026	64,847
Cash and cash equivalents, end of year	131,726	124,541	82,026
Supplemental disclosure of cash flow information:
Interest	42,752	34,149	37,904
Income taxes paid (refunded), net	28,674	31,323	(10,939)
Noncash investing and financing activities:
Assets acquired under capital leases	$ 4,914	$ 15,205	$ 24,207

Note 1 - Organization and Operations

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1.	ORGANIZATION AND OPERATIONS :

Rush Enterprises, Inc. (the “Company”) was incorporated in

1965

under the laws of the State of Texas. The Company operates a network of commercial vehicle dealerships that primarily sell commercial vehicles manufactured by Peterbilt, International, Hino, Ford, Isuzu, Mitsubishi Fuso, IC Bus or Blue Bird. Through its strategically located network of Rush Truck Centers, the Company provides

one

-stop service for the needs of its commercial vehicle customers, including retail sales of new and used commercial vehicles, aftermarket parts sales, service and repair facilities, financing, leasing and rental, and insurance products.

Note 2 - Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Significant Accounting Policies [Text Block]

2.	SIGNIFICANT ACCOUNTING POLICIES :

Principles of Consolidation

The consolidated financial statements presented herein include the accounts of Rush Enterprises, Inc. together with its consolidated subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.

Estimates in Financial Statements

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results

may

differ from those estimates.

Cash and Cash Equivalents

Cash and cash equivalents generally consist of cash and other money market instruments. The Company considers all highly liquid investments with an original maturity of

ninety

days or less to be cash equivalents.

Allowance for Doubtful Receivables and Repossession Losses

The Company provides an allowance for doubtful receivables and repossession losses after considering historical loss experience and other factors that might affect the collection of accounts receivable and the ability of customers to meet their obligations on finance contracts sold by the Company.

Inventories

Inventories are stated at the lower of cost or net realizable value. Cost is determined by specific identification of new and used commercial vehicle inventory and by the

first

-in,

first

-out method for tires, parts and accessories. As the market value of the Company’s inventory typically declines over time, reserves are established based on historical loss experience and market trends. These reserves are charged to cost of sales and reduce the carrying value of the Company’s inventory on hand. An allowance is provided when it is anticipated that cost will exceed net realizable value less a reasonable profit margin.

roperty and Equipment

Property and equipment are stated at cost and depreciated over their estimated useful lives. Leasehold improvements are amortized over the useful life of the improvement, or the term of the lease, whichever is shorter. Provision for depreciation of property and equipment is calculated primarily on a straight-line basis. The Company capitalizes interest on borrowings during the active construction period of major capital projects. Capitalized interest, when incurred, is added to the cost of underlying assets and is amortized over the estimated useful life of such assets. The Company capitalized interest of approximately

$357,600

related to major capital projects during

2018.

The cost, accumulated depreciation and amortization and estimated useful lives of certain of the Company’s assets are summarized as follows (in thousands):

	2018			2017			Estimated Life (Years)
Land	$	134,873		$	129,805				–
Buildings and improvements		434,049			404,679			10	–	39
Leasehold improvements		27,165			26,765			2	–	39
Machinery and shop equipment		73,578			65,694			5	–	20
Furniture, fixtures and computers		67,330			63,475			3	–	15
Transportation equipment		92,385			81,158			2	–	15
Lease and rental vehicles		914,708			894,905			2	–	8
Construction in progress		16,310			8,043
Accumulated depreciation and amortization		(576,345	)		(514,929	)

Total	$	1,184,053		$	1,159,595

The Company recorded depreciation expense of

$149.1

million and amortization expense of

$36.0

million for the year ended

December 31, 2018,

depreciation expense of

$140.3

million and amortization expense of

$17.6

million for the year ended

December 31, 2017

and depreciation expense of

$140.6

million and amortization expense of

$17.0

million for the year ended

December 31, 2016.

As of

December 31, 2018,

the Company had

$66.4

million in lease and rental vehicles under various capital leases included in property and equipment, net of accumulated amortization of

$44.6

million. The Company recorded depreciation and amortization expense of

$114.6

million related to lease and rental vehicles in lease and rental cost of products sold for the year ended

December 31, 2018,

$107.9

million for the year ended

December 31, 2017

and

$106.3

million for the year ended

December 31, 2016.

Goodwill

Goodwill is the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations accounted for under the purchase method. The Company tests goodwill for impairment annually during the

fourth

quarter, or when indications of potential impairment exist. These indicators would include a significant change in operating performance, or a planned sale or disposition of a significant portion of the business, among other factors. The Company tests for goodwill impairment utilizing a fair value approach at the reporting unit level. The Company has deemed its reporting unit to be the Truck Segment, as all components of the Truck Segment are similar.

The impairment test for goodwill involves comparing the fair value of a reporting unit to its carrying amount, including goodwill. If the carrying amount of the reporting unit exceeds its fair value, a

second

step is required to measure the goodwill impairment loss. The

second

step includes hypothetically valuing all the tangible and intangible assets of the reporting unit as if the reporting unit had been acquired in a business combination and comparing the hypothetical implied fair value of the reporting unit’s goodwill to the carrying amount of that goodwill. If the carrying amount of the reporting unit’s goodwill exceeds the hypothetical implied fair value of the goodwill, the Company would recognize an impairment loss in an amount equal to the excess,

not

to exceed the carrying amount. The Company determines the fair values calculated in an impairment test using the discounted cash flow method, which requires assumptions and estimates regarding future revenue, expenses and cash flow projections. The analysis is based upon available information regarding expected future cash flows of its reporting unit discounted at rates consistent with the cost of capital specific to the reporting unit.

impairment write down was required in the

fourth

quarter of

2018.

However, the Company cannot predict the occurrence of certain events that might adversely affect the reported value of goodwill in the future.

The following table sets forth the change in the carrying amount of goodwill for the Company for the years ended

December 31, 2018

and

2017

(in thousands):

Balance January 1, 2017	$	290,191
Acquisition		1,200
Balance December 31, 2017 and 2018	$	291,391

Other Assets

ERP Platform

The total capitalized costs of the Company’s SAP enterprise resource planning software platform (“ERP Platform”) of

$10.8

million are recorded on the Consolidated Balance Sheet in Other Assets. Amortization expense relating to the ERP Platform, which is recognized in depreciation and amortization expense in the Consolidated Statements of Income and Comprehensive Income, was

$21.7

million for the year ended

December 31, 2018

and

$3.4

million for the year ended

December 31, 2017.

The Company estimates that amortization expense relating to the ERP Platform will be approximately

$1.9

million for each of the next

five

years.

In the

first

quarter of

2018,

as part of an assessment that involved a technical feasibility study of the then current ERP Platform, the Company determined that a majority of the components of this ERP Platform would require replacement earlier than originally anticipated; in prior disclosures, the Company had referred to the ERP Platform separately as the SAP enterprise software and SAP dealership management system. In accordance with Accounting Standards Codification (“ASC”) Topic

350

40,

in the

first

quarter of

2018,

the Company adjusted the useful life of these components that were replaced so that the respective net book values of the components were fully amortized upon replacement in

May 2018.

The Company amortized the remaining net book value of the components that were replaced on a straight-line basis in

February 2018

through

May 2018.

The Company recognized

$19.9

million of amortization expense in

2018

related to the components of the ERP Platform that were replaced. The ERP Platform asset and related amortization are reflected in the Truck Segment.

Franchise Rights

The Company’s only significant identifiable intangible assets, other than goodwill, are rights under franchise agreements with manufacturers. The fair value of the franchise right is determined at the acquisition date by discounting the projected cash flows specific to each acquisition. The carrying value of the Company’s manufacturer franchise rights was

$7.0

million at

December 31, 2018

and

December 31, 2017,

and is included in Other Assets on the accompanying consolidated balance sheets. The Company has determined that manufacturer franchise rights have an indefinite life, as there are

economic or other factors that limit their useful lives and they are expected to generate cash flows indefinitely due to the historically long lives of the manufacturers’ brand names. Furthermore, to the extent that any agreements evidencing manufacturer franchise rights have expiration dates, the Company expects that it will be able to renew those agreements in the ordinary course of business. Accordingly, the Company does

not

amortize manufacturer franchise rights.

Due to the fact that manufacturer franchise rights are specific to geographic region, the Company has determined that evaluating and including all locations acquired in the geographic region is the appropriate level for purposes of testing franchise rights for impairment. Management reviews indefinite-lived manufacturer franchise rights for impairment annually during the

fourth

quarter, or more often if events or circumstances indicate that an impairment

may

have occurred. The Company is subject to financial statement risk to the extent that manufacturer franchise rights become impaired due to decreases in the fair market value of its individual franchises.

The significant estimates and assumptions used by management in assessing the recoverability of manufacturer franchise rights include estimated future cash flows, present value discount rate and other factors. Any changes in these estimates or assumptions could result in an impairment charge. The estimates of future cash flows, based on reasonable and supportable assumptions and projections, require management’s subjective judgment. Depending on the assumptions and estimates used, the estimated future cash flows projected in the evaluations of manufacturer franchise rights can vary within a range of outcomes.

impairment write down was required in the

fourth

quarter of

2018.

The Company cannot predict the occurrence of certain events that might adversely affect the reported value of manufacturer franchise rights in the future.

Income Taxes

Significant management judgment is required to determine the provisions for income taxes and to determine whether deferred tax assets will be realized in full or in part. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. When it is more likely than

not

that all or some portion of specific deferred income tax assets will

not

be realized, a valuation allowance must be established for the amount of deferred income tax assets that are determined

not

to be realizable. Accordingly, the facts and financial circumstances impacting deferred income tax assets are reviewed quarterly and management’s judgment is applied to determine the amount of valuation allowance required, if any, in any given period.

In determining its provision for income taxes, the Company uses an annual effective income tax rate based on annual income, permanent differences between book and tax income, and statutory income tax rates. The effective income tax rate also reflects its assessment of the ultimate outcome of tax audits. The Company adjusts its annual effective income tax rate as additional information on outcomes or events becomes available. Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur.

The Company’s income tax returns are periodically audited by U.S. federal, state and local tax authorities. These audits include questions regarding the Company’s tax filing positions, including the timing and amount of deductions. At any time, multiple tax years are subject to audit by the various tax authorities. In evaluating the tax benefits associated with the Company’s various tax filing positions, the Company records a tax benefit for uncertain tax positions. A number of years

may

elapse before a particular matter for which the Company has established a liability is audited and effectively settled. The Company adjusts its liability for unrecognized tax benefits in the period in which it determines the issue is effectively settled with the tax authorities, the statute of limitations expires for the relevant taxing authority to examine the tax position, or when more information becomes available. The Company includes its liability for unrecognized tax benefits, including accrued interest, in accrued liabilities on the Company’s Consolidated Balance Sheet and in income tax expense in the Company’s Consolidated Statements of Income. Unfavorable settlement of any particular issue would require use of the Company’s cash and a charge to income tax expense. Favorable resolution would be recognized as a reduction to income tax expense at the time of resolution.

Additionally, despite the Company’s belief that its tax return positions are consistent with applicable tax law, management expects that certain positions

may

be challenged by taxing authorities. Settlement of any challenge can result in

change, a complete disallowance, or some partial adjustment reached through negotiations. The Company records interest and penalties, if any, related to federal and state unrecognized tax benefits in income tax expense.

Revenue Recognition Policies

Effective

January 1, 2018,

the Company adopted ASU

2014

09,

“

Revenue from Contracts with Customers

(

“

Topic

606

”

)

,” using the modified retrospective transition method. This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements and financial instruments. Under Topic

606,

the Company recognizes revenue when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of Topic

606,

the Company performs the following

five

steps: (i) identify the contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies a performance obligation. The Company only applies the

five

-step model to contracts when it is probable that it will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of Topic

606,

the Company assesses the goods or services promised within each contract and determines those that are performance obligations. The Company then assess whether each promised good or service is distinct and recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. For a complete discussion of accounting for revenue, see Note

– Revenue of the Notes to Consolidated Financial Statements.

Lease and rental revenue is recognized over the period of the related lease or rental agreement. Contingent rental revenue is recognized when it is earned.

Cost of Sales

For the Company’s new and used commercial vehicle operations, cost of sales consists primarily of the Company’s actual purchase price plus make-ready expenses, less any applicable manufacturers’ incentives. For the Company’s parts operations, cost of sales consists primarily of the Company’s actual purchase price, less any applicable manufacturers’ incentives. For the Company’s service and collision center operations, technician labor cost is the primary component of cost of sales. For the Company’s rental and leasing operations, cost of sales consists primarily of depreciation and amortization, rent, maintenance costs, license costs and interest expense on the lease and rental fleet owned and leased by the Company. There are

costs of sales associated with the Company’s finance and insurance revenue or other revenue.

Taxes Assessed by a Governmental Authority

The Company accounts for sales taxes assessed by a governmental authority that are directly imposed on a revenue-producing transaction on a net (excluded from revenues) basis.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consist primarily of incentive based compensation for sales, finance and general management personnel, salaries for administrative personnel and expenses for rent, marketing, insurance, utilities, research and development and other general operating purposes.

Stock Based Compensation

The Company applies the provisions of ASC topic

718

10,

“Compensation – Stock Compensation,” which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors, including grants of employee stock options, restricted stock units, restricted stock awards and employee stock purchases under the Employee Stock Purchase Plan, based on estimated fair values.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of share-based payment awards on the date of grant. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods.

Compensation expense for all share-based payment awards is recognized using the straight-line single-option method. Stock-based compensation expense is recognized based on awards expected to vest. Accordingly, stock based compensation expense has been reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

The Company’s determination of fair value of share-based payment awards on the date of grant using an option-pricing model is affected by the Company’s stock price as well as assumptions regarding a number of highly complex and subjective variables. These variables include the Company’s expected stock price volatility over the term of the awards and actual and projected stock option exercise behaviors. Option-pricing models were developed for use in estimating the value of traded options that have

vesting or hedging restrictions and are fully transferable. Because the Company’s stock options have characteristics that are significantly different from traded options and because changes in the subjective assumptions can materially affect the estimated value, in management’s opinion, the existing valuation models

may

not

provide an accurate measure of the fair value that value

may

not

be indicative of the fair value observed in a market transaction between a willing buyer and a willing seller.

The following table reflects the weighted-average fair value of stock options granted during each period using the Black-Scholes option valuation model with the following weighted-average assumptions used:

	2018			2017			2016
Expected stock volatility		31.68	%		33.54	%		35.63	%
Weighted-average stock volatility		31.68	%		33.54	%		35.63	%
Expected dividend yield		0.00	%		0.00	%		0.00	%
Risk-free interest rate		2.69	%		2.17	%		1.64	%
Expected life (years)		6.0			6.0			6.0
Weighted-average fair value of stock options granted	$	15.46		$	12.33		$	6.54

The Company computes its historical stock price volatility in accordance with ASC topic

718

10.

The risk-free interest rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The dividend yield assumption is based on the Company’s history and expectation of dividend payouts. The expected life of stock options represents the weighted-average period the stock options are expected to remain outstanding.

Advertising Costs

Advertising costs are expensed as incurred. Advertising and marketing expense was

$10.4

million for

2018,

$9.5

million for

2017

and

$6.8

million for

2016.

Advertising and marketing expense is included in selling, general and administrative expense.

Accounting for Internal Use Software

The Company’s accounting policy with respect to accounting for computer software developed or obtained for internal use is consistent with ASC topic

350

40,

which provides guidance on accounting for the costs of computer software developed or obtained for internal use and identifies characteristics of internal-use software. The Company has capitalized software costs, including capitalized interest, of approximately

$10.8

million at

December 31, 2018,

net of accumulated amortization of

$8.3

million, and had

$31.9

million, net of accumulated amortization of

$20.0

million at

December 31, 2017.

Insurance

The Company is partially self-insured for a portion of the claims related to its property and casualty insurance programs. Accordingly, the Company is required to estimate expected losses to be incurred. The Company engages a

third

-party administrator to assess any open claims and the Company adjusts its accrual accordingly on an annual basis. The Company is also partially self-insured for a portion of the claims related to its worker’s compensation and medical insurance programs. The Company uses actuarial information provided from

third

-party administrators to calculate an accrual for claims incurred, but

not

reported, and for the remaining portion of claims that have been reported.

Fair Value Measurements

The Company has various financial instruments that it must measure at fair value on a recurring basis. See Note

– Financial Instruments and Fair Value of the Notes to Consolidated Financial Statements, for further information. The Company also applies the provisions of fair value measurement to various nonrecurring measurements for its financial and nonfinancial assets and liabilities.

Applicable accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (an exit price). The Company measures its assets and liabilities using inputs from the following

three

levels of the fair value hierarchy:

Level

inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level

inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are

not

active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level

includes unobservable inputs that reflect the Company’s assumptions about what factors market participants would use in pricing the asset or liability. The Company develops these inputs based on the best information available, including its own data.

Acquisitions

The Company uses the acquisition method of accounting for the recognition of assets acquired and liabilities assumed through acquisitions at their estimated fair values as of the date of acquisition. Any excess consideration transferred over the estimated fair values of the identifiable net assets acquired is recorded as goodwill. While the Company uses its best estimates and assumptions to measure the fair value of the identifiable assets acquired and liabilities assumed at the acquisition date, the estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which is

not

to exceed

one

year from the date of acquisition, any changes in the estimated fair values of the net assets recorded for the acquisitions will result in an adjustment to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Consolidated Statements of Income.

New Accounting Pronouncements

February 2016,

the FASB issued ASU

No.

2016

02,

“

Leases (

“

Topic

842

”

” which is intended to increase the transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The new standard requires lessees to record assets and liabilities on the balance sheet for all leases with terms longer than

twelve

months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement.

The Company adopted Topic

842

January 1, 2019.

The Company will apply a modified retrospective transition approach for all leases existing at, or entered into after,

January 1, 2019.

Upon adoption, the Company is applying the practical expedients permitted within Topic

842,

which among other things, allows it to retain its existing assessment of whether an arrangement is, or contains, a lease and is classified as an operating or finance lease. The Company made an accounting policy election that keeps leases with an initial term of

twelve

months or less off of the balance sheet and results in recognizing those lease payments in the Consolidated Statements of Income and Comprehensive Income on a straight-line basis over the lease term. The Company estimates that the adoption of Topic

842

will result in the recognition of right-of-use assets and lease liabilities for operating leases of approximately

$51.9

million on its Consolidated Balance Sheets, with

material impact to its Consolidated Statements of Income and Comprehensive Income.

Note 3 - Supplier Concentration

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

3.	SUPPLIER CONCENTRATION :

Major Suppliers and Dealership Agreements

The Company has entered into dealership agreements with various manufacturers of commercial vehicles and buses (“Manufacturers”). These agreements are nonexclusive agreements that allow the Company to stock, sell at retail and service commercial vehicles and sell parts from the Manufacturers in the Company’s defined market. The agreements allow the Company to use the Manufacturers’ names, trade symbols and intellectual property and expire as follows:

Manufacturer		Expiration Dates
Peterbilt		March 2019 through January 2022
International		May 2020 through October 2023
Isuzu		Indefinite
Hino		Indefinite
Ford		Indefinite
Blue Bird		August 2019
IC Bus		May 2020 through December 2022

These agreements, as well as agreements with various other Manufacturers, impose a number of restrictions and obligations on the Company, including restrictions on a change in control of the Company and the maintenance of certain required levels of working capital. Violation of these restrictions could result in the loss of the Company’s right to purchase the Manufacturers’ products and use the Manufacturers’ trademarks.

The Company purchases its new Peterbilt vehicles from Peterbilt and most of the parts sold at its Peterbilt dealerships from PACCAR, Inc, the parent company of Peterbilt, at prevailing prices charged to all franchised dealers. Sales of new Peterbilt trucks accounted for approximately

62.5%

of the Company’s new vehicle sales revenue for the year ended

December 31, 2018,

65.2%

of the Company’s new vehicle sales revenue for the year ended

December

31,

2017,

and

61.0%

of the Company’s new vehicle sales revenue for the year ended

December

31,

2016.

Primary Lenders

The Company purchases its new and used commercial vehicle inventories with the assistance of floor plan financing programs as described in Note

to these Notes to Consolidated Financial Statements. The Company’s floor plan financing agreements provide that the occurrence of certain events will be considered events of default. In the event that the Company’s floor plan financing becomes insufficient, or its relationship with any of its current primary lenders terminates, the Company would need to obtain similar financing from other sources. Management believes it can obtain additional floor plan financing or alternative financing if necessary.

The Company also acquires lease and rental vehicles with the assistance of financing agreements with PACCAR Leasing Company, Bank of America and Wells Fargo. The financing agreements are secured by a lien on the acquired vehicle. The terms of the financing agreements are similar to the corresponding lease agreements with the Company’s customers.

Concentrations of Credit Risks

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company places its cash and cash equivalents with what it considers to be quality financial institutions based on periodic assessments of such institutions. The Company’s cash and cash equivalents

may

be uninsured or in deposit accounts that exceed the Federal Deposit Insurance Corporation insurance limit.

The Company controls credit risk through credit approvals and by selling a majority of its trade receivables, other than vehicle accounts receivable, without recourse. Concentrations of credit risk with respect to trade receivables are reduced because a large number of geographically diverse customers make up the Company’s customer base; however, substantially all of the Company’s business is concentrated in the United States commercial vehicle markets and related aftermarkets.

The Company generally sells finance contracts it enters into with customers to finance the purchase of commercial vehicles to

third

parties. These finance contracts are sold by the Company both with and without recourse. A majority of the Company’s finance contracts are sold without recourse. The Company provides an allowance for doubtful receivables and a reserve for repossession losses related to finance contracts sold with recourse. Historically, the Company’s allowances and reserves have covered losses inherent in these receivables.

Note 4 - Accounts Receivable

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

4.	ACCOUNTS RECEIVABLE :

The Company’s accounts receivable, net, consisted of the following (in thousands):

	December 31,
	2018			2017

Trade accounts receivable from sale of vehicles	$	100,013		$	104,779
Trade receivables other than vehicles		60,716			57,697
Warranty claims		10,427			9,473
Other accounts receivable		20,910			12,753
Less allowance for bad debt and warranty claims		(1,416	)		(826	)

Total	$	190,650		$	183,875

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Note 5 - Inventories

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

5.	INVENTORIES :

The Company’s inventories, net, consisted of the following (in thousands):

	December 31,
	2018			2017

New commercial vehicles	$	976,464		$	747,531
Used commercial vehicles		96,126			76,488
Parts and accessories		259,396			205,534
Other		19,573			15,924
Less allowance		(11,636	)		(12,183	)

Total	$	1,339,923		$	1,033,294

Note 6 - Valuation Accounts

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

6.	VALUATION ACCOUNTS:

Valuation and allowance accounts include the following (in thousands):

	Balance Beginning of Year		Net Charged to Costs and Expenses		Net Write- Offs			Balance End of Year

2018
Reserve for accounts receivable	$	616	$	2,183	$	(1,812	)	$	987
Reserve for warranty receivables		210		2,031		(1,812	)		429
Reserve for parts inventory		6,230		2,744		(1,924	)		7,050
Reserve for commercial vehicle inventory		5,953		3,550		(4,916	)		4,587

2017
Reserve for accounts receivable	$	549	$	625	$	(558	)	$	616
Reserve for warranty receivables		114		713		(617	)		210
Reserve for parts inventory		4,885		1,414		(69	)		6,230
Reserve for commercial vehicle inventory		5,102		5,997		(5,146	)		5,953

2016
Reserve for accounts receivable	$	506	$	1,415	$	(1,372	)	$	549
Reserve for warranty receivables		105		833		(824	)		114
Reserve for parts inventory		7,291		3,400		(5,806	)		4,885
Reserve for commercial vehicle inventory		6,541		9,623		(11,062	)		5,102

Allowance for Doubtful Receivables

The Company sells a majority of its customer accounts receivable on a non-recourse basis to a

third

-party that is responsible for qualifying the customer for credit at the point of sale. If the

third

-party approves the customer for credit, then the

third

-party assumes all credit risk related to the transaction. For accounts receivable that the Company does

not

sell or that are sold with recourse to the Company, an allowance for doubtful receivables is provided after considering historical loss experience and other factors that might affect the collection of such accounts receivable.

The Company provides an allowance for uncollectible warranty receivables. The Company evaluates the collectability of its warranty claims receivable based on a combination of factors, including aging and correspondence with the applicable manufacturer. Management reviews the warranty claims receivable aging and adjusts the allowance based on historical experience. The Company records charge-offs related to warranty receivables after it is determined that a receivable will

not

be fully collected.

Inventory

The Company provides a reserve for obsolete and slow moving parts. The reserve is reviewed and, if necessary, adjustments are made on a quarterly basis. The Company relies on historical information to support its reserve. Once the inventory is written down, the Company does

not

reverse any reserve balance until the inventory is sold.

The valuation for new and used commercial vehicle inventory is based on specific identification. A detail of new and used commercial vehicle inventory is reviewed and, if necessary, adjustments to the value of specific vehicles are made on a quarterly basis.

Note 7 - Floor Plan Notes Payable and Lines of Credit

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Debt Disclosure [Text Block]

7.	FLOOR PLAN NOTES PAYABLE AND LINES OF CREDIT :

Floor Plan Notes Payable

Floor plan notes are financing agreements to facilitate the Company’s purchase of new and used commercial vehicle inventory. These notes are collateralized by the inventory purchased and accounts receivable arising from the sale thereof. The Company’s Floor Plan Credit Agreement provides for a loan commitment of up to

$875.0

million and has the interest rate benchmarked to LIBOR, as defined in the agreement.

The interest rate under the Company’s Floor Plan Credit Agreement is the

three

month LIBOR rate plus

1.51%.

The interest rate applicable to the Company’s Floor Plan Credit Agreement was approximately

4.26%

December 31, 2018.

The Company utilizes its excess cash on hand to pay down its outstanding borrowings under its Floor Plan Credit Agreement, and the resulting interest earned is recognized as an offset to the Company’s gross interest expense under the Floor Plan Credit Agreement. The Company is required to pay a monthly working capital fee equal to

0.16%

per annum multiplied by the amount of voluntary prepayments of new and used inventory loans.

The Company finances substantially all of the purchase price of its new commercial vehicle inventory, and the loan value of its used commercial vehicle inventory, under its Floor Plan Credit Agreement, under which BMO Harris pays the manufacturer directly with respect to new commercial vehicles. Amounts borrowed under the Company’s Floor Plan Credit Agreement are due when the related commercial vehicle inventory (collateral) is sold and the sales proceeds are collected by the Company. The Company’s Floor Plan Credit Agreement expires

June 30, 2019,

although BMO Harris has the right to terminate the Floor Plan Credit Agreement at any time upon

120

days’ written notice. The Company

may

terminate the Floor Plan Credit Agreement at any time, although if it does so, it must pay a prepayment processing fee equal to

$500,000

if such termination occurs prior to

June 30, 2019,

subject to specified limited exceptions. On

December 31, 2018,

the Company had approximately

$798.4

million outstanding under its Floor Plan Credit Agreement.

June 2012,

the Company entered into a wholesale financing agreement with Ford Motor Credit Company that provides for the financing of, and is collateralized by, the Company’s new Ford vehicle inventory. This wholesale financing agreement bears interest at a rate of Prime plus

150

basis points minus certain incentives and rebates. As of

December 31, 2018,

the interest rate on the wholesale financing agreement was

7.0%

before considering the applicable incentives. On

December 31, 2018,

the Company had an outstanding balance of approximately

$139.0

million under the Ford Motor Credit Company wholesale financing agreement.

The Company’s weighted average interest rate for floor plan notes payable was

1.9%

for the year ended

December 31, 2018,

and

1.4%

for the year ended

December 31, 2017,

which is net of interest related to prepayments of new and used inventory loans.

Assets pledged as collateral were as follows (in thousands):

	December 31,
	2018		2017
Inventories, new and used vehicles at cost based on specific identification, net of allowance	$	1,068,003	$	818,066
Vehicle sale related accounts receivable		100,013		104,779

Total	$	1,168,016	$	922,845

Floor plan notes payable related to vehicles	$	1,023,019	$	778,561

Lines of Credit

The Company has a secured line of credit that provides for a maximum borrowing of

$17.5

million. There were

advances outstanding under this secured line of credit at

December 31, 2018;

however,

$11.6

million was pledged to secure various letters of credit related to self-insurance products, leaving

$5.9

million available for future borrowings as of

December 31, 2018.

The Company has a Working Capital Facility with BMO Harris. The Working Capital Facility includes up to

$100

million of revolving credit loans available to us for working capital, capital expenditures and other general corporate purposes. The amount of the borrowings under the Working Capital Facility are subject to borrowing base limitations based on the value of our eligible parts inventory and company vehicles. The Working Capital Facility includes a

$20

million letter of credit sublimit. Borrowings under the Working Capital Facility bear interest at rates based on LIBOR or the Base Rate (as such terms are defined in the Working Capital Facility), plus an applicable margin determined based on outstanding borrowing under the Working Capital Facility. In addition, we are required to pay a commitment fee on the amount unused under the Working Capital Facility. The Working Capital Facility expires on the earlier of (i)

March 21, 2020

and (ii) the date on which all commitments under the Working Capital Facility shall have terminated, whether as a result of the occurrence of the Commitment Termination Date (as defined in the Floor Plan Working Capital Facility) or otherwise. There were

advances outstanding under the Working Capital Facility as of

December 31, 2018.

Note 8 - Long-term Debt

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Long-term Debt [Text Block]

8.	LONG-TERM DEBT :

Long-term debt was comprised of the following (in thousands):

	December 31,
	2018			2017

Variable interest rate term notes	$	80,355		$	96,157
Fixed interest rate term notes		520,818			515,371

Total debt		601,173			611,528

Less: current maturities		(161,955	)		(145,139	)

Total long-term debt, net of current maturities	$	439,218		$	466,389

As of

December

31,

2018,

long-term debt maturities were as follows (in thousands):

2019	$	161,955
2020		158,815
2021		103,938
2022		88,155
2023		57,689
Thereafter		30,621

Total	$	601,173

The interest rates on the Company’s variable interest rate notes are based on various LIBOR benchmark rates. The interest rates on the notes ranged from approximately

4.0%

4.5%

December 31, 2018.

Payments on the notes range from approximately

$5,330

$125,833

per month, plus interest. Maturities of these notes range from

May 2019

June 2025.

The Company’s fixed interest rate notes had interest rates that ranged from approximately

2.95%

7.61%

December

31,

2018.

Payments on the notes range from

$255

$72,315

per month. Maturities of these notes range from

January 2019

September 2028.

The proceeds from the issuance of the notes were used primarily to acquire land, buildings and improvements and vehicles for the Company’s lease and rental fleet. The notes are secured by the assets acquired with the proceeds of such notes.

The Company’s long-term real estate debt agreements, floor plan financing arrangements and the Working Capital Facility require the Company to satisfy various financial ratios such as the debt to worth ratio, leverage ratio, the fixed charge coverage ratio and certain requirements for tangible net worth and GAAP net worth. As of

December 31, 2018,

the Company was in compliance with all debt covenants. The Company does

not

anticipate any breach of the covenants in the foreseeable future.

Note 9 - Financial Instruments and Fair Value

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Fair Value Disclosures [Text Block]

9.	FINANCIAL INSTRUMENTS AND FAIR VALUE :

The Company measures certain financial assets and liabilities at fair value on a recurring basis. Financial instruments consist primarily of cash, accounts receivable, accounts payable and floor plan notes payable. The carrying values of the Company’s financial instruments approximate fair value due either to their short-term nature or existence of variable interest rates, which approximate market rates. Certain methods and assumptions were used by the Company in estimating the fair value of financial instruments at

December 31, 2018,

and

2017.

The carrying value of current assets and current liabilities approximates the fair value due to the short maturity of these items.

The fair value of the Company’s long-term debt is based on secondary market indicators. Because the Company’s debt is

not

quoted, estimates are based on each obligation’s characteristics, including remaining maturities, interest rate, credit rating, collateral and liquidity. Accordingly, the Company concluded that the valuation measurement inputs of its long-term debt represent, at its lowest level, current market interest rates available to the Company for similar debt and the Company’s current credit standing. The Company has categorized such debt within Level

of the hierarchy framework. The carrying amount approximates fair value.

Auction Rate Securities

In prior years, the Company invested in interest-bearing short-term investments primarily consisting of investment-grade auction rate securities classified as available-for-sale and reported at fair value. These types of investments were designed to provide liquidity through an auction process that reset the applicable interest rates at predetermined periods ranging from

days. This reset mechanism was intended to allow existing investors to continue to own their respective interest in the auction rate security or to gain immediate liquidity by selling their interests at par.

December 31, 2018,

the Company did

not

hold any auction rate securities. The issuer redeemed, at par, all of the remaining auction rate securities in the

third

quarter of

2018.

December 31, 2017,

the Company held auction rate securities with underlying tax-exempt municipal bonds that matured in

2030

and had a fair value and a cost basis of

$6.4

million.

Long-Lived Assets

During the

first

quarter of

2016,

the Company instituted plans to consolidate its dealership network. In

2016,

the Company recorded an impairment charge related to the value of the real estate in the affected locations and a write-down of certain excess real estate in the amount of

$7.5

million.

The fair value measurements for the Company’s long-lived assets are based on Level

inputs. Fair values of the value of the real estate were determined based on evaluations by a

third

-party real estate broker that utilized its knowledge and historical experience in real estate markets and transactions. During

2016

and

2017,

the Company sold

seven

of the properties previously classified as held for sale with a fair value of

$8.3

million. In

2018,

the Company sold

four

of the properties with an aggregate fair value of

$4.7

million. During the

third

quarter of

2017,

the Company made the decision to put

one

of the properties previously classified as “held for sale” with a fair value of

$1.4

million back into service. During the

fourth

quarter of

2018,

the Company made the decision to put

one

of the properties previously classified as “held for sale” with a fair value of

$2.6

million back into service. As of

December 31, 2018,

the remaining real estate associated with the restructuring activities is included in assets held for sale on the Consolidated Balance Sheets.

The following table presents long-lived assets measured and recorded at fair value on a nonrecurring basis (in thousands):

Description		Fair Value Measurements Using Significant Unobservable Inputs December 31 , 201 8
Long-lived assets held for sale		$	2,269

For further discussion of assets held for sale, see Note

– Restructuring Costs of the Notes to Consolidated Financial Statements.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Note 10 - Leasing Activities

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Leases of Lessee Disclosure [Text Block]

10.	LEAS ING ACTIVITIES :

Vehicle Leases

as Lessee

The Company leases vehicles, as lessee, primarily over periods ranging from

one

ten

years under operating lease and capital lease arrangements. Generally, the Company is required to incur all operating costs and pay a minimum rental. The Company usually guarantees the residual value of vehicles under operating lease and capital lease arrangements. At

December 31, 2018,

the Company guaranteed vehicle residual values of approximately

$38.0

million under operating lease and capital lease arrangements. Historically, the Company purchases these vehicles at the end of the lease term and recognizes a gain on the subsequent sale of the vehicle. Vehicle lease expenses were approximately

$2.5

million for the year ended

December

31,

2018,

$0.9

million for the year ended

December

31,

2017

and

$1.3

million for the year ended

December 31, 2016.

As discussed below, these vehicles are then subleased by the Company to customers under various agreements. Future minimum sublease rentals to be received by the Company under non-cancelable subleases, as described below, are

$72.8

million.

Future minimum lease payments under capital and non-cancelable vehicle leases as of

December

31,

2018,

are as follows (in thousands):

	Capital Leases			Operating Leases
2019	$	22,033		$	3,580
2020		19,113			3,264
2021		14,894			2,764
2022		11,062			2,479
2023		5,095			1,957
Thereafter		2,963			1,246

Total minimum lease payments	$	75,160		$	15,290
Less amount representing interest		(6,046	)
Present value of net minimum capital lease payments		69,114
Less current portion		(19,631	)
Obligations under capital leases less current portion	$	49,483

Customer Vehicle Leases

as Lessor

The Company, through its PacLease and Idealease franchises, leases vehicles that the Company owns or leases to customers primarily over periods of

one

ten

years, under operating lease arrangements that require a minimum rental payment and a contingent rental payment based on usage. Rental income during the year ended

December 31, 2018

consisted of minimum rental payments of approximately

$209.3

million and contingent rental payments of

$30.0

million. Rental income during the year ended

December 31, 2017

consisted of minimum rental payments of approximately

$187.4

million and contingent rental payments of

$29.0

million. Rental income during the year ended

December 31, 2016

consisted of minimum rental payments of approximately

$182.1

million and contingent rental payments of

$27.8

million. Minimum rental payments to be received for non-cancelable leases and subleases in effect as of

December

31,

2018,

are as follows (in thousands):

2019	$	97,906
2020		79,784
2021		57,486
2022		37,212
2023		21,813
Thereafter		12,980

Total	$	307,181

As of

December 31, 2018,

the Company had

$576.0

million of lease and rental vehicles included in property and equipment, net of accumulated depreciation of

$338.7

million. As of

December 31, 2017,

the Company had

$584.4

million of lease and rental vehicles included in property and equipment, net of accumulated depreciation of

$310.5

million.

Other Leases - Land and Buildings

The Company leases various assets under operating leases with expiration dates ranging from

February 2019

through

June

2102.

Monthly rental payments range from approximately

$275

per month to

$38,091

per month. Rental expense was

$10.7

million for the year ended

December

31,

2018,

$9.5

million for the year ended

December

31,

2017,

and

$10.3

million for the year ended

December

31,

2016.

Future minimum lease payments under non-cancelable leases at

December

31,

2018,

are as follows (in thousands):

2019	$	8,715
2020		7,202
2021		5,426
2022		4,599
2023		3,239
Thereafter		21,217

Total	$	50,398

Note 11 - Share Based Compensation and Employee Benefit Plans

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

11.	SHARE BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS :

Employee Stock Purchase Plan

The Company’s

2004

Employee Stock Purchase Plan, as amended and restated (the “Employee Stock Purchase Plan”) allows eligible employees to contribute up to

$10,625

of their base earnings every

six

months toward the semi-annual purchase of the Company’s Class A Common Stock. The employee’s purchase price is

85%

of the lesser of the closing price of the Class A Common Stock on the

first

business day or the last business day of the semi-annual offering period, as reported by The NASDAQ Global Select Market. Employees

may

purchase shares having a fair market value of up to

$25,000

(measured as of the

first

day of each semi-annual offering period) for each calendar year. Under the Employee Stock Purchase Plan, there are approximately

331,000

shares remaining of the

1,400,000

shares of the Company’s Class A Common Stock that have been reserved for issuance. The Company issued

84,192

shares under the Employee Stock Purchase Plan during the year ended

December 31, 2018

and

112,754

shares during the year ended

December 31, 2017.

Of the

7,214

employees eligible to participate, approximately

1,495

elected to participate in the plan as of

December 31, 2018.

Non-Employee Director Stock Option Plan

The Rush Enterprises, Inc.

2006

Non-Employee Director Stock Option Plan, as amended and restated (the “Director Plan”), reserved

500,000

shares of Class A Common Stock for issuance upon exercise of any awards granted under the plan. The Director Plan is designed to attract and retain highly qualified non-employee directors. Currently, each non-employee director receives a grant of the Company’s Class A Common Stock, or up to

40%

cash, equivalent to a compensation value of

$125,000.

2018,

two

non-employee directors received a grant of

2,926

shares of the Company’s Class A Common Stock,

one

non-employee director received a grant of

2,048

shares of the Company’s Class A Common Stock and

$37,500

cash and

two

non-employee director received a grant of

1,756

shares of the Company’s Class A Common Stock and

$50,000

cash, for total compensation equivalent to

$125,000

each. In

2017,

two

non-employee directors received a grant of

3,307

shares of the Company’s Class A Common Stock,

one

non-employee director received a grant of

1,984

shares of the Company’s Class A Common Stock and

$50,000

cash,

one

non-employee director received a grant of

2,315

shares of the Company’s Class A Common Stock and

$37,500

cash, and

one

non-employee director received a grant of

2,480

shares of the Company’s Class A Common Stock and

$31,250

cash, for total compensation equivalent to

$125,000

each. Under the Director Plan, there are approximately

140,300

shares remaining for issuance of the

500,000

shares of the Company’s Class A Common Stock that have been reserved for issuance. The Company granted

11,412

shares of Class A Common Stock under the Director Plan during the year ended

December 31, 2018

and

13,393

shares of Class A Common Stock under the Director Plan during the year ended

December 31, 2017.

Employee

Incentive

Plans

May 2007,

the Board of Directors and shareholders adopted the Rush Enterprises, Inc.

2007

Long-Term Incentive Plan (the

“2007

Incentive Plan”). The

2007

Incentive Plan provides for the grant of stock options (which

may

be nonqualified stock options or incentive stock options for tax purposes), stock appreciation rights issued independent of or in tandem with such options (“SARs”), restricted stock awards and performance awards. The

2007

Incentive Plan was amended and restated on

May 20, 2014

and again on

May 16, 2017

to increase the number of shares available for issuance under the plan to

7,800,000

shares of Class A Common Stock and

2,200,000

shares of Class B Common Stock and to make certain other changes intended to bring the

2007

Incentive Plan into conformance with current best practices.

The aggregate number of shares of common stock subject to stock options or SARs that

may

be granted to any

one

participant in any year under the

2007

Incentive Plan is

100,000

shares of Class A Common Stock or

100,000

shares of Class B Common Stock. Each option granted pursuant to the

2007

Incentive Plan has a

ten

year term from the grant date and vests in

three

equal annual installments beginning on the

third

anniversary of the grant date. The Company has

7,800,000

shares of Class A Common Stock and

2,200,000

shares of Class B Common Stock reserved for issuance upon exercise of any awards granted under the Company’s

2007

Incentive Plan. As of

December 31, 2018,

approximately

1,781,000

shares of Class A Common Stock and

762,000

shares of Class B Common Stock are available for issuance upon the exercise of any awards granted under the Company’s

2007

Incentive Plan. The Company issues new shares of its Class A or Class B Common Stock upon the exercise of stock options or vesting of restricted stock units. During the year ended

December 31, 2018,

the Company granted

459,663

options to purchase Class A Common Stock and

306,590

restricted Class B Common Stock units under the

2007

Incentive Plan. During the year ended

December 31, 2017,

the Company granted

472,463

options to purchase Class A Common Stock and

274,390

restricted Class B Common Stock units under the

2007

Incentive Plan.

Valuation and Expense Information

Stock-based compensation expense related to stock options, restricted stock awards, restricted stock units and employee stock purchases was

$18.1

million for the year ended

December 31, 2018,

$15.6

million for the year ended

December 31, 2017,

and

$12.9

million for the year ended

December 31, 2016.

Cash received from options exercised and shares purchased under all share-based payment arrangements was

$5.7

million for the year ended

December 31, 2018,

$24.8

million for the year ended

December 31, 2017,

and

$6.5

million for the year ended

December 31, 2016.

A summary of the Company’s stock option activity and related information for the year ended

December 31, 2018,

follows:

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
				Exercise		Contractual		Intrinsic
Options	Shares			Price		Life (in Years)		Value

Balance of Outstanding Options at January 1, 2018		2,724,308		$	24.78
Granted		459,663			42.99
Exercised		(126,027	)		21.77
Forfeited		(73,664	)		28.21
Balance of Outstanding Options at December 31, 2018		2,984,280		$	27.63		6.04	$	24,290,404
Expected to vest after December 31, 2018		1,750,298		$	30.62		7.63	$	10,524,034
Vested and exercisable at December 31, 2018		1,187,924		$	23.15		3.64	$	13,457,583

The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on the weighted-average of the closing price as of

December 31, 2018,

of the Company’s Class A Common Stock of

$34.48.

The total intrinsic value of options exercised was

$2.7

million during the year ended

December 31, 2018,

$25.0

million during the year ended

December 31, 2017,

and

$4.8

million during the year ended

December 31, 2016.

A summary of the status of the number of shares underlying Company’s non-vested stock options as of

December 31, 2018,

and changes during the year ended

December 31, 2018,

is as follows:

				Weighted
				Average
	Number of			Grant Date
Non-vested Shares	Shares			Fair Value

Non-vested at January 1, 2018		1,836,062		$	11.12
Granted		459,663			15.46
Vested		(430,040	)		13.26
Forfeited		(69,329	)		10.73

Non-vested at December 31, 2018		1,796,356		$	11.74

The total fair value of vested options was

$5.7

million during the year ended

December 31, 2018,

$6.3

million during the year ended

December 31, 2017,

and

$5.6

million during the year ended

December 31, 2016.

The weighted-average grant date fair value of options granted was

$15.46

per share during the year ended

December 31, 2018,

$12.33

per share during the year ended

December 31, 2017,

and

$6.54

per share during the year ended

December 31, 2016.

Stock Awards

The Company granted restricted stock units to certain of its employees under the

2007

Incentive Plan and unrestricted stock awards to its non-employee directors under the Director Plan during the year ended

December 31, 2018.

The restricted stock units granted to employees vest in

three

equal installments on the first,

second

and

third

anniversary of the grant date and are forfeited in the event the recipient’s employment or relationship with the Company is terminated prior to vesting, except as a result of retirement or under certain circumstances associated with a change of control or involuntary termination, as further described in the Company’s executive transition plan. The fair value of the restricted stock units to the Company’s employees is amortized to expense on a straight-line basis over the restricted stock’s vesting period. The shares granted to non-employee directors are expensed on the grant date.

The following table presents a summary of the Company’s non-vested restricted stock units outstanding at

December

31,

2018:

				Weighted
				Average				Weighted
				Remaining		Aggregate		Average
				Contractual		Intrinsic		Grant Date
Stock Awards and Units	Shares			Life (in Years)		Value		Fair Value

Outstanding non-vested shares at January 1, 2018		540,132						$	25.71
Granted		306,590							40.46
Vested		(267,588	)						24.57
Forfeited		(6,000	)						33.62

Outstanding non-vested at December 31, 2018		573,134			8.6	$	20,402,823	$	34.07

Expected to vest after December 31, 2018		571,974			8.6	$	20,361,531

The total fair value of the shares issued upon the vesting of stock awards during the year ended

December 31, 2018

was

$6.6

million. The weighted-average grant date fair value of stock awards and units granted was

$40.46

per share during the year ended

December 31, 2018,

$31.37

per share during the year ended

December 31, 2017

and

$17.57

per share during the year ended

December 31, 2016.

As of

December 31, 2018,

the Company had

$8.1

million of unrecognized compensation expense related to non-vested employee stock options to be recognized over a weighted-average period of

3.3

years and

$7.1

million of unrecognized compensation cost related to non-vested restricted stock units to be recognized over a weighted-average period of

1.9

years.

Defined Contribution Plan

The Company has a defined contribution plan (the “Rush

401k

Plan”), which is available to all Company employees. Each employee who has completed

days of continuous service is entitled to enter the Rush

401k

Plan on the

first

day of the following month. Participating employees

may

contribute from

50%

of total gross compensation. However, certain highly compensated employees are limited to a maximum contribution of

15%

of total gross compensation. For the

first

10%

of an employee’s contribution, the Company contributes an amount equal to

20%

of the employees’ contributions for those employees with less than

five

years of service and an amount equal to

40%

of the employees’ contributions for those employees with more than

five

years of service. The Company incurred expenses related to the Rush

401k

Plan of approximately

$8.9

million during the year ended

December 31, 2018,

$7.0

million during the year ended

December 31, 2017

and

$6.5

million during the year ended

December

31,

2016.

Deferred Compensation Plan

November 6, 2010,

the Board of Directors of the Company adopted the Rush Enterprises, Inc. Deferred Compensation Plan (the “Deferred Compensation Plan”) pursuant to which selected employees and directors

may

elect to defer a portion of their annual compensation. The Deferred Compensation Plan also provides the Company with the discretion to make matching contributions to participants’ accounts. The Company established a rabbi trust to finance obligations under the Deferred Compensation Plan with corporate-owned variable life insurance contracts. Participants are

100%

vested in their respective deferrals and the earnings thereon. The

first

deferral election period began on

January 1, 2011.

The Company’s liability related to the Deferred Compensation Plan was

$11.1

million on

December 31, 2018

and

$9.8

million on

December 31, 2017.

The related cash surrender value of the life insurance contracts was

$8.9

million on

December 31, 2018

and

$9.6

million on

December 31, 2017.

The Company currently does

not

provide any post-retirement benefits nor does it provide any post-employment benefits.

Note 12 - Earnings Per Share

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Earnings Per Share [Text Block]

12.	EARNINGS PER SHARE :

Basic earnings per share (“EPS”) were computed by dividing income from continuing operations by the weighted average number of shares of common stock outstanding during the period. Diluted EPS differs from basic EPS due to the assumed conversions of potentially dilutive options and restricted shares that were outstanding during the period.

Each share of Class A Common Stock ranks equal to each share of Class B Common Stock with respect to receipt of any dividends or distributions declared on shares of common stock and the right to receive proceeds on liquidation or dissolution of the Company after payment of its indebtedness and liquidation preference payments to holders of any preferred shares. However, holders of Class A Common Stock have

1/20th

one

vote per share on all matters requiring a shareholder vote, while holders of Class B Common Stock have

one

full vote per share.

The following is a reconciliation of the numerators and the denominators of the basic and diluted per share computations for income from continuing operations (in thousands, except per share amounts):

	2018		2017		2016
Numerator-
Numerator for basic and diluted earnings per share −
Net income available to common shareholders	$	139,062	$	172,129	$	40,582
Denominator-
Denominator for basic earnings per share – weighted average shares outstanding		39,223		39,627		39,938
Effect of dilutive securities−
Employee and director stock options and restricted share awards		1,070		1,353		665
Denominator for diluted earnings per share − adjusted weighted average shares outstanding and assumed conversions		40,293		40,980		40,603
Basic earnings per common share	$	3.55	$	4.34	$	1.02
Diluted earnings per common share and common share equivalents	$	3.45	$	4.20	$	1.00

Options to purchase shares of common stock that were outstanding for the years ended

December

31,

2018,

2017

and

2016

that were

not

included in the computation of diluted earnings per share because the effect would have been anti-dilutive are as follows (in thousands):

		2018				2017				2016
Anti-dilutive options – weighted average			513				449				2,043

Note 13 - Income Taxes

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Income Tax Disclosure [Text Block]

13.	INCOME TAXE S:

The tax provisions are summarized as follows (in thousands):

	Year Ended December 31,
	2018			2017			2016
Current provision −
Federal	$	31,819		$	22,443		$	15,236
State		6,291			4,030			2,300
		38,110			26,473			17,536
Deferred provision −
Federal		6,082			(64,821	)		8,260
State		(85	)		2,618			71
		5,997			(62,203	)		8,331
Provision (benefit) for income taxes	$	44,107		$	(35,730	)	$	25,867

A reconciliation of taxes based on the federal statutory rates and the provisions (benefits) for income taxes are summarized as follows (in thousands):

	Year Ended December 31,
	2018		2017			2016
Income taxes at the federal statutory rate	$	38,469	$	47,749		$	23,255
State income taxes, net of federal benefit		4,913		3,246			1,552
Tax effect of permanent differences		596		(4,097	)		887
Revaluation of deferred taxes		−		(82,862	)		−
Other, net		129		234			173
(Benefit) provision for income taxes	$	44,107	$	(35,730	)	$	25,867

The components of income taxes recorded in other comprehensive income and paid in capital consisted of the following (in thousands):

	Year Ended December 31,
	2018		2017		2016
Income tax expense (benefit) related to components of other comprehensive income:
Change in fair value of available-for-sale securities		−		183		13
Total	$	−	$	183	$	13

Paid in capital – stock based compensation	$	−	$	−	$	294

The following summarizes the components of net deferred income tax liabilities included in the balance sheet (in thousands):

	December 31,
	2018			2017
Deferred income tax (assets) liabilities:
Inventory	$	(4,076	)	$	(3,637	)
Accounts receivable		(231	)		(157	)
Capital lease obligations		(16,202	)		(19,480	)
Stock options		(9,026	)		(6,899	)
Accrued liabilities		(2,481	)		(2,533	)
State net operating loss carry forward		(2,463	)		(2,262	)
State tax credit		(312	)		(410	)
Other		(3,276	)		(3,627	)
Difference between book and tax basis- Depreciation and amortization		179,325			174,266
		141,258			135,261
Valuation allowance		50			50
Net deferred income tax liability	$	141,308		$	135,311

December 22, 2017,

the Tax Act was enacted. The Tax Act included, among other items, a reduction of the U.S. federal corporate tax rate from

35%

21%

effective

January 1, 2018.

The Tax Act made broad and complex changes to the U.S. tax code, some of which affected the Company’s

2017

year end results. Staff Accounting Bulletin

No.

118

(SAB

118

) provided guidance that allowed registrants to provide a reasonable estimate of the Tax Act in their financial statements and adjust the reported impact in a measurement period

not

to exceed

one

year. We applied the guidance in SAB

118

when accounting for the enactment-date effects of the Tax Act in

2017

and throughout

2018.

December 31, 2017,

we had

not

completed our accounting for all of the enactment-date income tax effects of the Tax Act under ASC

740,

Income Taxes

, for the remeasurement of deferred tax assets and liabilities. At

December 31, 2018,

we have now completed our accounting for all of the enactment-date income tax effects of the Tax Act. As further discussed below, during

2018,

we did

not

identify any material or significant adjustments to the provisional amounts recorded at

December 31, 2017.

December 31, 2017,

the Company recognized a net tax benefit of

$82.9

million, which was included as a component of income tax expense. The benefit recorded was primarily a result of the remeasurement of the Company’s deferred tax assets and liabilities at the rate in which they will reverse. Upon further analysis of certain aspects of the Tax Act and refinement of our calculations during the

12 months ended

December 31, 2018,

we adjusted our provisional amount by less than

$100,000

which is included as a component of income tax expense from continuing operations.

As of

December 31, 2018,

the Company had approximately

$51.0

million in state net operating loss carry forwards that expire from

2018

2038.

The Company has evaluated whether its state net operating losses are realizable and has recorded a valuation allowance of

$50,000

against them. The valuation allowance remained unchanged in

2018.

The Company had unrecognized income tax benefits totaling

$2.4

million as a component of accrued liabilities as of

December 31, 2018,

and

$2.6

million at

December 31, 2017,

the total of which, if recognized, would impact the Company’s effective tax rate. An unfavorable settlement would require a charge to income tax expense and a favorable resolution would be recognized as a reduction to income tax expense. The Company recognizes interest accrued related to unrecognized tax benefits in income tax expense. During the years ended

December 31, 2018,

2017

and

2016,

the Company recognized approximately $(

27,450

$21,050,

and

$34,800

in interest expense (income).

amounts were accrued for penalties. The Company had approximately

$139,000,

$166,000

and

$145,000

for the payment of interest accrued as of

December 31, 2018,

2017

and

2016,

respectively.

The Company does

not

anticipate a significant change in the amount of unrecognized tax benefits in the next

months. As of

December 31, 2018,

the tax years ended

December 31, 2015

through

2018

remained subject to audit by federal tax authorities and the tax years ended

December 31, 2014

through

2018,

remained subject to audit by state tax authorities.

A reconciliation of the change in the unrecognized tax benefits is as follows (in thousands):

	2018			2017			2016
Unrecognized tax benefits at beginning of period	$	2,555		$	2,401		$	2,332
Gross increases – tax positions in current year		504			619			429
Reductions due to lapse of statute of limitations		(670	)		(465	)		(360	)
Unrecognized tax benefits at end of period	$	2,389		$	2,555		$	2,401

Note 14 - Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

14.	COMMITMENTS AND CONTINGENCIES :

From time to time, the Company is involved in litigation arising out of its operations in the ordinary course of business. The Company maintains liability insurance, including product liability coverage, in amounts deemed adequate by management. To date, aggregate costs to the Company for claims, including product liability actions, have

not

been material. However, an uninsured or partially insured claim, or claim for which indemnification is

not

available, could have a material adverse effect on the Company’s financial condition or results of operations. The Company believes that there are

claims or litigation pending, the outcome of which could have a material adverse effect on its financial position or results of operations. However, due to the inherent uncertainty of litigation, there can be

assurance that the resolution of any particular claim or proceeding would

not

have a material adverse effect on the Company’s financial condition or results of operations for the fiscal period in which such resolution occurred.

The Company has purchase obligations of approximately

$10.0

million as of

December

31,

2018

related to the Company’s construction contract for a facility in Atlanta, Georgia and the purchase of real estate in Irving, Texas. The Company also has a contractual obligation of approximately

$2.8

million with SAP America, Inc. with respect to the software license agreement for the ERP Platform.

Note 15 - Acquisitions

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Business Combination Disclosure [Text Block]

15.	ACQUISITIONS :

The following acquisition was considered a business combination and accounted for under ASC

805

“Business Combinations.” Pro forma information is

not

included in accordance with ASC

805

because this acquisition was

not

considered material.

December 14, 2017,

the Company acquired certain assets of Transwest San Diego, LLC, which included a Ford truck franchise in San Diego, California. The transaction was valued at approximately

$2.2

million, with the purchase price paid in cash.

Note 16 - Unaudited Quarterly Financial Data

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Quarterly Financial Information [Text Block]

16.	UNAUDITED QUARTERLY FINANCIAL DATA :

(In thousands, except per share amounts.)

	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter
201 8

Revenues	$	1,240,781	$	1,348,831	$	1,376,136	$	1,540,442
Gross profit		226,995		243,377		249,057		258,840
Operating income		32,389		43,426		58,649		68,387
Income before income taxes		28,083		38,932		54,181		61,973
Net income	$	21,039	$	29,389	$	41,665	$	46,969

Earnings per share:
Basic	$	0.53	$	0.75	$	1.06	$	1.22
Diluted	$	0.51	$	0.72	$	1.03	$	1.20

201 7

Revenues	$	1,044,797	$	1,203,523	$	1,257,459	$	1,208,103
Gross profit		187,907		209,072		220,048		212,909
Operating income		24,849		37,407		48,436		38,017
Income before income taxes		22,058		34,583		45,335		34,423
Net income	$	14,479	$	21,999	$	29,784	$	105,867

Earnings per share:
Basic	$	0.37	$	0.55	$	0.75	$	2.65
Diluted	$	0.36	$	0.54	$	0.72	$	2.54

Note 17 - Segments

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

17.	SEGMENTS :

The Company currently has

one

reportable business segment - the Truck Segment. The Truck Segment includes the Company’s operation of a nationwide network of commercial vehicle dealerships that provide an integrated

one

-stop source for the commercial vehicle needs of its customers, including retail sales of new and used commercial vehicles; aftermarket parts, service and collision center facilities; and a wide array of financial services, including the financing of new and used commercial vehicle purchases, insurance products and truck leasing and rentals. The commercial vehicle dealerships are deemed a single reporting unit because they have similar economic characteristics. The Company’s chief operating decision maker considers the entire Truck Segment,

not

individual dealerships or departments within its dealerships, when making decisions about resources to be allocated to the segment and assessing its performance.

The Company also has revenues attributable to

three

other operating segments. These segments include a retail tire company, an insurance agency and a guest ranch operation and are included in the All Other column below.

None

of these segments has ever met any of the quantitative thresholds for determining reportable segments.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The Company evaluates performance based on income before income taxes,

not

including extraordinary items.

The Company accounts for intersegment sales and transfers as if the sales or transfers were to

third

parties, that is, at current market prices. There were

material intersegment sales during the years ended

December 31, 2018,

2017

2016.

The following table contains summarized information about reportable segment revenue, segment income or loss from continuing operations and segment assets for the periods ended

December 31, 2018,

2017

and

2016

(in thousands):

	Truck		All
	Segment		Other			Totals
201 8
Revenues from external customers	$	5,488,787	$	17,403		$	5,506,190
Interest income		1,376		–			1,376
Interest expense		20,850		208			21,058
Depreciation and amortization		70,170		319			70,489
Segment operating income		202,725		126			202,851
Segment income (loss) from continuing operations before taxes		183,251		(82	)		183,169
Segment assets		3,166,174		35,176			3,201,350
Goodwill		288,831		2,560			291,391
Expenditures for segment assets		238,229		31			238,260

201 7
Revenues from external customers	$	4,698,035	$	15,847		$	4,713,882
Interest income		891		–			891
Interest expense		13,024		177			13,201
Depreciation and amortization		49,634		435			50,069
Segment operating income (loss)		149,338		(629	)		148,709
Segment income (loss) from continuing operations before taxes		137,205		(806	)		136,399
Segment assets		2,855,001		35,138			2,890,139
Goodwill		288,831		2,560			291,391
Expenditures for segment assets		209,852		65			209,917

201 6
Revenues from external customers	$	4,199,348	$	15,266		$	4,214,614
Interest income		621		–			621
Interest expense		14,740		160			14,900
Depreciation and amortization		50,771		490			51,261
Segment operating income (loss)		81,483		(756	)		80,728
Segment income (loss) from continuing operations before taxes		67,364		(915	)		66,449
Segment assets		2,570,016		33,031			2,603,047
Goodwill		287,631		2,560			290,191
Expenditures for segment assets		196,704		261			196,965

Note 18 - Related Party Transactions

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

18.	RELATED PARTY TRANSACTIONS :

The Company has entered into a loan and security agreement with Central California Truck & Trailer Sales, LLC (“CCTTS”), a related party. The

fifth

amendment to the loan and security agreement provides for advances up to

$17.0

million to finance commercial vehicle inventory and bears interest at the

three

month LIBOR rate plus

4.0%.

Principal amounts advanced under the loan agreement are due when the related commercial vehicle inventory is sold by CCTTS and the interest is payable monthly. The Company had a

$12.9

million receivable under the loan agreement as of

December 31, 2018,

and an

$11.9

million receivable as of

December 31, 2017.

Note 19 - Restructuring Costs

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Restructuring and Related Activities Disclosure [Text Block]

19.	RESTRUCTURING COSTS :

During

2016,

the Company instituted plans to consolidate its dealership network and incurred pre-tax expenses of approximately

$8.9

million related to costs associated with the restructuring activities, including asset impairment charges.

The restructuring charges included

$8.2

million associated with impairment charges related to certain fixed assets, the value of the real estate underlying the affected locations and a write-down of certain excess real estate, which was reported in selling, general and administrative expenses in the Consolidated Statements of Income and Comprehensive Income. See Note

– Financial Instruments and Fair Value, for further discussion on the impairment charge related to the value of real estate in the affected locations.

During

2016

and

2017,

the Company sold

seven

of the properties previously classified as held for sale with a fair value of

$8.3

million. In

2018,

the Company sold

four

of the properties with an aggregate fair value of

$4.7

million. During the

third

quarter of

2017,

the Company made the decision to put

one

of the properties previously classified as “held for sale” with a fair value of

$1.4

million back into service. During the

fourth

quarter of

2018,

the Company made the decision to put

one

of the properties previously classified as “held for sale” with a fair value of

$2.6

million back into service. As of

December 31, 2018,

the remaining real estate associated with the restructuring activities is included in assets held for sale on the Consolidated Balance Sheets.

The restructuring costs and the assets held for sale are reported under the Truck Segment.

Note 20 - Revenue

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

20.	RE VENUE :

May 2014,

the FASB issued ASU

No.

2014

09,

“

Revenue from Contracts with Customers

(“Topic

606”

)

,” which amended the accounting standards for revenue recognition. The Company adopted Topic

606

January 1, 2018,

and is applying the modified retrospective method. There was

not

a material impact to revenues as a result of applying Topic

606

for the year ended

December 31, 2018,

and there have

not

been significant changes to our business processes, systems or internal controls as a result of implementing the standard. Adoption of the new standard does

not

materially change the timing or amount of revenue recognized in the Company’s Consolidated Statements of Income and Comprehensive Income.

The Company’s revenues are primarily generated from the sale of finished products to customers. Those sales predominantly contain a single delivery element and revenue for such sales is recognized when the customer obtains control, which is typically when the finished product is delivered to the customer. The Company’s material revenue streams have been identified as the following: the sale of new and used commercial vehicles, arrangement of associated commercial vehicle financing and insurance contracts, the performance of commercial vehicle repair services and the sale of commercial vehicle parts. Taxes collected from customers relating to product sales and remitted to governmental authorities are excluded from revenues.

The following table summarizes the Company’s disaggregated revenue by revenue source for the year ended

December 31, 2018 (

in thousands):

	Year Ended December 31, 2018
Commercial vehicle sales revenue	$	3,558,637
Parts revenue		937,241
Commercial vehicle repair service revenue		732,811
Finance revenue		10,795
Insurance revenue		9,740
Other revenue		18,728
Total	$	5,267,952

All of the Company's performance obligations and associated revenues are generally transferred to customers at a point in time. The Company does

not

have any material contract assets or contract liabilities on the Balance Sheet as of

December 31, 2018.

Revenues related to commercial vehicle sales, parts sales, commercial vehicle repair service, finance and the majority of other revenues are related to the Truck Segment.

For the sale of new and used commercial vehicles, revenue is recognized at a point in time when control is transferred to the customer, which is when delivery of the commercial vehicle occurs. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring the commercial vehicle. When control is transferred to the customer, the Company has an unconditional right to payment and a receivable is recorded for any consideration

not

received.

The Company controls the commercial vehicle before it is transferred to the customer and it obtains all of the remaining benefits from the commercial vehicle relating to the sale, ability to pledge the asset or hold the asset. The Company is a principal in all commercial vehicle transactions. The Company retains inventory risk, determines the selling price to the customer and delivers the commercial vehicle to the customer. The Company generally pays a commission to internal sales representatives for the sale of a commercial vehicle. The Company will continue to expense the commission and recognize it concurrently with the respective commercial vehicle sale revenue upon delivery of the commercial vehicle to a customer.

Revenue from the sale of parts is recognized when the Company transfers control of the goods to the customer and consideration has been received in the form of cash or a receivable from the customer. The Company provides its customers the right to return certain eligible parts, estimates the expected returns based on an analysis of historical experience and records an allowance for estimated returns, which has historically

not

been material.

Revenue from the sale of commercial vehicle repair service is recognized when the service performed by the Company on a customer’s vehicle is complete and the customer accepts the repair. Because the Company does

not

have an enforceable right to payment while the repair is being performed, revenue is recognized when the repair is complete. After a customer’s acceptance, the Company has

remaining obligations to transfer goods or services to the customer and consideration has been received in the form of cash or a receivable from the customer.

Any remaining performance obligations represent service orders for which work has

not

been completed. The Company’s service contracts are predominantly short-term in nature with a contract term of

one

month or less. For those contracts, the Company has utilized the practical expedient in Topic

606

exempting the Company from disclosure of the transaction price allocated to remaining performance obligations if the performance obligation is part of a contract that has an original expected duration of

one

year or less.

The Company receives commissions from

third

-party lenders for arranging customer financing for the purchase of commercial vehicles. The receipt of such commissions is deemed to be a single performance obligation that is satisfied when a financing agreement is executed and accepted by the financing provider. Once the contract has been accepted by the financing provider, the Company’s performance obligation has been satisfied and the Company generally has

further obligations under the contract. The Company is the agent in this transaction, as it does

not

have control over the acceptance of the customer’s financing arrangement by the financing provider. Consideration paid to the Company by the financing provider is based on the agreement between the Company and the financing provider.

The Company receives commissions from

third

-party insurance companies for arranging insurance coverage for customers. The receipt of such commissions is deemed to be a single performance obligation that is satisfied when the insurance coverage is bound. The Company has

further obligations under the contract. The Company is the agent in this transaction because it does

not

have control over the insurance coverage provided by the insurance carrier. Consideration paid to the Company by the insurance provider is based on the agreement between the Company and the insurance provider.

The Company records revenues from finance and insurance products at the net commission amount, which includes estimates of chargebacks that can occur if the underlying contract is

not

fulfilled. Chargeback amounts for commissions from financing companies are estimated assuming financing contracts are terminated before the customer has made

six

monthly payments. Chargeback amounts for commissions from insurance companies are estimated assuming insurance contracts are terminated before the underlying insurance contractual term has expired. Chargeback reserve amounts are based on historical chargebacks and have historically been immaterial. The Company does

not

have any right to retrospective commissions based on future profitability of finance and insurance contracts arranged.

Other revenue is mostly documentation fees that are charged to customers in connection with the sale of a commercial vehicle and recognized as other revenue when a truck is sold. The Company recognizes the documentation fees at the point in time when the commercial vehicle is delivered to the customer.

Note 21 - Subsequent Event

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Subsequent Events [Text Block]

21.	SUBSEQUENT EVENT :

February 6, 2019,

the Company announced that it had entered into an agreement with Tallman Group, the largest International dealership group in Canada, to form Rush Truck Centres of Canada Limited, which will operate Tallman Group’s network of commercial vehicle dealerships in the Province of Ontario, Canada. Under the terms of the agreement, which is subject to customary closing conditions, a subsidiary of the Company will purchase

50%

of the equity in Rush Truck Centres of Canada Limited for approximately CAD

$30.0

million. The purchase price does

not

include any of the real estate, which will continue to be leased from the existing owners of the real estate. The Company does

not

intend to consolidate Rush Truck Centres of Canada Limited as part of its Truck Segment for financial reporting purposes. Rush Truck Centres of Canada Limited will be accounted for as an equity method investment. The parties expect the transaction to close on

February 25, 2019.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

Principles of Consolidation

Use of Estimates, Policy [Policy Text Block]

Estimates in Financial Statements

may

differ from those estimates.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents

Cash and cash equivalents generally consist of cash and other money market instruments. The Company considers all highly liquid investments with an original maturity of

ninety

days or less to be cash equivalents.

Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]

Allowance for Doubtful Receivables and Repossession Losses

Inventory, Policy [Policy Text Block]

Inventories

Inventories are stated at the lower of cost or net realizable value. Cost is determined by specific identification of new and used commercial vehicle inventory and by the

first

-in,

first

Property, Plant and Equipment, Policy [Policy Text Block]

roperty and Equipment

$357,600

related to major capital projects during

2018.

The cost, accumulated depreciation and amortization and estimated useful lives of certain of the Company’s assets are summarized as follows (in thousands):

	2018			2017			Estimated Life (Years)
Land	$	134,873		$	129,805				–
Buildings and improvements		434,049			404,679			10	–	39
Leasehold improvements		27,165			26,765			2	–	39
Machinery and shop equipment		73,578			65,694			5	–	20
Furniture, fixtures and computers		67,330			63,475			3	–	15
Transportation equipment		92,385			81,158			2	–	15
Lease and rental vehicles		914,708			894,905			2	–	8
Construction in progress		16,310			8,043
Accumulated depreciation and amortization		(576,345	)		(514,929	)

Total	$	1,184,053		$	1,159,595

The Company recorded depreciation expense of

$149.1

million and amortization expense of

$36.0

million for the year ended

December 31, 2018,

depreciation expense of

$140.3

million and amortization expense of

$17.6

million for the year ended

December 31, 2017

and depreciation expense of

$140.6

million and amortization expense of

$17.0

million for the year ended

December 31, 2016.

As of

December 31, 2018,

the Company had

$66.4

million in lease and rental vehicles under various capital leases included in property and equipment, net of accumulated amortization of

$44.6

million. The Company recorded depreciation and amortization expense of

$114.6

million related to lease and rental vehicles in lease and rental cost of products sold for the year ended

December 31, 2018,

$107.9

million for the year ended

December 31, 2017

and

$106.3

million for the year ended

December 31, 2016.

Goodwill and Intangible Assets, Policy [Policy Text Block]

Goodwill

fourth

second

step is required to measure the goodwill impairment loss. The

second

not

impairment write down was required in the

fourth

quarter of

2018.

However, the Company cannot predict the occurrence of certain events that might adversely affect the reported value of goodwill in the future.

The following table sets forth the change in the carrying amount of goodwill for the Company for the years ended

December 31, 2018

and

2017

(in thousands):

Balance January 1, 2017	$	290,191
Acquisition		1,200
Balance December 31, 2017 and 2018	$	291,391

Intangible Assets, Finite-Lived, Policy [Policy Text Block]

Other Assets

ERP Platform

The total capitalized costs of the Company’s SAP enterprise resource planning software platform (“ERP Platform”) of

$10.8

$21.7

million for the year ended

December 31, 2018

and

$3.4

million for the year ended

December 31, 2017.

The Company estimates that amortization expense relating to the ERP Platform will be approximately

$1.9

million for each of the next

five

years.

In the

first

quarter of

2018,

350

40,

in the

first

quarter of

2018,

the Company adjusted the useful life of these components that were replaced so that the respective net book values of the components were fully amortized upon replacement in

May 2018.

The Company amortized the remaining net book value of the components that were replaced on a straight-line basis in

February 2018

through

May 2018.

The Company recognized

$19.9

million of amortization expense in

2018

related to the components of the ERP Platform that were replaced. The ERP Platform asset and related amortization are reflected in the Truck Segment.

Franchise Rights

$7.0

million at

December 31, 2018

and

December 31, 2017,

and is included in Other Assets on the accompanying consolidated balance sheets. The Company has determined that manufacturer franchise rights have an indefinite life, as there are

not

amortize manufacturer franchise rights.

fourth

quarter, or more often if events or circumstances indicate that an impairment

may

impairment write down was required in the

fourth

quarter of

2018.

The Company cannot predict the occurrence of certain events that might adversely affect the reported value of manufacturer franchise rights in the future.

Income Tax, Policy [Policy Text Block]

Income Taxes

not

that all or some portion of specific deferred income tax assets will

not

be realized, a valuation allowance must be established for the amount of deferred income tax assets that are determined

not

may

Additionally, despite the Company’s belief that its tax return positions are consistent with applicable tax law, management expects that certain positions

may

be challenged by taxing authorities. Settlement of any challenge can result in

Revenue Recognition, Policy [Policy Text Block]

Revenue Recognition Policies

Effective

January 1, 2018,

the Company adopted ASU

2014

09,

“

Revenue from Contracts with Customers

(

“

Topic

606

”

)

606,

the Company performs the following

five

606,

– Revenue of the Notes to Consolidated Financial Statements.

Lease and rental revenue is recognized over the period of the related lease or rental agreement. Contingent rental revenue is recognized when it is earned.

Cost of Sales, Policy [Policy Text Block]

Cost of Sales

costs of sales associated with the Company’s finance and insurance revenue or other revenue.

Sales Taxes, Policy [Policy Text Block]

Taxes Assessed by a Governmental Authority

The Company accounts for sales taxes assessed by a governmental authority that are directly imposed on a revenue-producing transaction on a net (excluded from revenues) basis.

Selling, General and Administrative Expenses, Policy [Policy Text Block]

Selling, General and Administrative Expenses

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

Stock Based Compensation

The Company applies the provisions of ASC topic

718

10,

may

not

provide an accurate measure of the fair value that value

may

not

be indicative of the fair value observed in a market transaction between a willing buyer and a willing seller.

	2018			2017			2016
Expected stock volatility		31.68	%		33.54	%		35.63	%
Weighted-average stock volatility		31.68	%		33.54	%		35.63	%
Expected dividend yield		0.00	%		0.00	%		0.00	%
Risk-free interest rate		2.69	%		2.17	%		1.64	%
Expected life (years)		6.0			6.0			6.0
Weighted-average fair value of stock options granted	$	15.46		$	12.33		$	6.54

The Company computes its historical stock price volatility in accordance with ASC topic

718

10.

Advertising Costs, Policy [Policy Text Block]

Advertising Costs

Advertising costs are expensed as incurred. Advertising and marketing expense was

$10.4

million for

2018,

$9.5

million for

2017

and

$6.8

million for

2016.

Advertising and marketing expense is included in selling, general and administrative expense.

Internal Use Software, Policy [Policy Text Block]

Accounting for Internal Use Software

The Company’s accounting policy with respect to accounting for computer software developed or obtained for internal use is consistent with ASC topic

350

40,

$10.8

million at

December 31, 2018,

net of accumulated amortization of

$8.3

million, and had

$31.9

million, net of accumulated amortization of

$20.0

million at

December 31, 2017.

Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]

Insurance

third

-party administrators to calculate an accrual for claims incurred, but

not

reported, and for the remaining portion of claims that have been reported.

Fair Value Measurement, Policy [Policy Text Block]

Fair Value Measurements

The Company has various financial instruments that it must measure at fair value on a recurring basis. See Note

three

levels of the fair value hierarchy:

Level

inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level

inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are

not

Level

Business Combinations Policy [Policy Text Block]

Acquisitions

not

to exceed

one

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Pronouncements

February 2016,

the FASB issued ASU

No.

2016

02,

“

Leases (

“

Topic

842

”

twelve

months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement.

The Company adopted Topic

842

January 1, 2019.

The Company will apply a modified retrospective transition approach for all leases existing at, or entered into after,

January 1, 2019.

Upon adoption, the Company is applying the practical expedients permitted within Topic

842,

twelve

842

will result in the recognition of right-of-use assets and lease liabilities for operating leases of approximately

$51.9

million on its Consolidated Balance Sheets, with

material impact to its Consolidated Statements of Income and Comprehensive Income.

Note 2 - Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	2018			2017			Estimated Life (Years)
Land	$	134,873		$	129,805				–
Buildings and improvements		434,049			404,679			10	–	39
Leasehold improvements		27,165			26,765			2	–	39
Machinery and shop equipment		73,578			65,694			5	–	20
Furniture, fixtures and computers		67,330			63,475			3	–	15
Transportation equipment		92,385			81,158			2	–	15
Lease and rental vehicles		914,708			894,905			2	–	8
Construction in progress		16,310			8,043
Accumulated depreciation and amortization		(576,345	)		(514,929	)

Total	$	1,184,053		$	1,159,595

Schedule of Goodwill [Table Text Block]

Balance January 1, 2017	$	290,191
Acquisition		1,200
Balance December 31, 2017 and 2018	$	291,391

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2018			2017			2016
Expected stock volatility		31.68	%		33.54	%		35.63	%
Weighted-average stock volatility		31.68	%		33.54	%		35.63	%
Expected dividend yield		0.00	%		0.00	%		0.00	%
Risk-free interest rate		2.69	%		2.17	%		1.64	%
Expected life (years)		6.0			6.0			6.0
Weighted-average fair value of stock options granted	$	15.46		$	12.33		$	6.54

Note 4 - Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	December 31,
	2018			2017

Trade accounts receivable from sale of vehicles	$	100,013		$	104,779
Trade receivables other than vehicles		60,716			57,697
Warranty claims		10,427			9,473
Other accounts receivable		20,910			12,753
Less allowance for bad debt and warranty claims		(1,416	)		(826	)

Total	$	190,650		$	183,875

Note 5 - Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31,
	2018			2017

New commercial vehicles	$	976,464		$	747,531
Used commercial vehicles		96,126			76,488
Parts and accessories		259,396			205,534
Other		19,573			15,924
Less allowance		(11,636	)		(12,183	)

Total	$	1,339,923		$	1,033,294

Note 6 - Valuation Accounts (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Summary of Valuation Allowance [Table Text Block]

	Balance Beginning of Year		Net Charged to Costs and Expenses		Net Write- Offs			Balance End of Year

2018
Reserve for accounts receivable	$	616	$	2,183	$	(1,812	)	$	987
Reserve for warranty receivables		210		2,031		(1,812	)		429
Reserve for parts inventory		6,230		2,744		(1,924	)		7,050
Reserve for commercial vehicle inventory		5,953		3,550		(4,916	)		4,587

2017
Reserve for accounts receivable	$	549	$	625	$	(558	)	$	616
Reserve for warranty receivables		114		713		(617	)		210
Reserve for parts inventory		4,885		1,414		(69	)		6,230
Reserve for commercial vehicle inventory		5,102		5,997		(5,146	)		5,953

2016
Reserve for accounts receivable	$	506	$	1,415	$	(1,372	)	$	549
Reserve for warranty receivables		105		833		(824	)		114
Reserve for parts inventory		7,291		3,400		(5,806	)		4,885
Reserve for commercial vehicle inventory		6,541		9,623		(11,062	)		5,102

Note 7 - Floor Plan Notes Payable and Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Assets Pledged As Collateral [Table Text Block]

	December 31,
	2018		2017
Inventories, new and used vehicles at cost based on specific identification, net of allowance	$	1,068,003	$	818,066
Vehicle sale related accounts receivable		100,013		104,779

Total	$	1,168,016	$	922,845

Floor plan notes payable related to vehicles	$	1,023,019	$	778,561

Note 8 - Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

	December 31,
	2018			2017

Variable interest rate term notes	$	80,355		$	96,157
Fixed interest rate term notes		520,818			515,371

Total debt		601,173			611,528

Less: current maturities		(161,955	)		(145,139	)

Total long-term debt, net of current maturities	$	439,218		$	466,389

Schedule of Maturities of Long-term Debt [Table Text Block]

2019	$	161,955
2020		158,815
2021		103,938
2022		88,155
2023		57,689
Thereafter		30,621

Total	$	601,173

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-Name Accounting Standards Codification
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-Section 50
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+ Details

Note 9 - Financial Instruments and Fair Value (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

Description		Fair Value Measurements Using Significant Unobservable Inputs December 31 , 201 8
Long-lived assets held for sale		$	2,269

Note 10 - Leasing Activities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block]

	Capital Leases			Operating Leases
2019	$	22,033		$	3,580
2020		19,113			3,264
2021		14,894			2,764
2022		11,062			2,479
2023		5,095			1,957
Thereafter		2,963			1,246

Total minimum lease payments	$	75,160		$	15,290
Less amount representing interest		(6,046	)
Present value of net minimum capital lease payments		69,114
Less current portion		(19,631	)
Obligations under capital leases less current portion	$	49,483

Schedule of Future Minimum Rental Receivable for Operating Leases [Table Text Block]

2019	$	97,906
2020		79,784
2021		57,486
2022		37,212
2023		21,813
Thereafter		12,980

Total	$	307,181

Lessee, Operating Lease, Disclosure [Table Text Block]

2019	$	8,715
2020		7,202
2021		5,426
2022		4,599
2023		3,239
Thereafter		21,217

Total	$	50,398

Note 11 - Share Based Compensation and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Share-based Compensation, Stock Options, Activity [Table Text Block]

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
				Exercise		Contractual		Intrinsic
Options	Shares			Price		Life (in Years)		Value

Balance of Outstanding Options at January 1, 2018		2,724,308		$	24.78
Granted		459,663			42.99
Exercised		(126,027	)		21.77
Forfeited		(73,664	)		28.21
Balance of Outstanding Options at December 31, 2018		2,984,280		$	27.63		6.04	$	24,290,404
Expected to vest after December 31, 2018		1,750,298		$	30.62		7.63	$	10,524,034
Vested and exercisable at December 31, 2018		1,187,924		$	23.15		3.64	$	13,457,583

Schedule of Nonvested Share Activity [Table Text Block]

				Weighted
				Average
	Number of			Grant Date
Non-vested Shares	Shares			Fair Value

Non-vested at January 1, 2018		1,836,062		$	11.12
Granted		459,663			15.46
Vested		(430,040	)		13.26
Forfeited		(69,329	)		10.73

Non-vested at December 31, 2018		1,796,356		$	11.74

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

				Weighted
				Average				Weighted
				Remaining		Aggregate		Average
				Contractual		Intrinsic		Grant Date
Stock Awards and Units	Shares			Life (in Years)		Value		Fair Value

Outstanding non-vested shares at January 1, 2018		540,132						$	25.71
Granted		306,590							40.46
Vested		(267,588	)						24.57
Forfeited		(6,000	)						33.62

Outstanding non-vested at December 31, 2018		573,134			8.6	$	20,402,823	$	34.07

Expected to vest after December 31, 2018		571,974			8.6	$	20,361,531

Note 12 - Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	2018		2017		2016
Numerator-
Numerator for basic and diluted earnings per share −
Net income available to common shareholders	$	139,062	$	172,129	$	40,582
Denominator-
Denominator for basic earnings per share – weighted average shares outstanding		39,223		39,627		39,938
Effect of dilutive securities−
Employee and director stock options and restricted share awards		1,070		1,353		665
Denominator for diluted earnings per share − adjusted weighted average shares outstanding and assumed conversions		40,293		40,980		40,603
Basic earnings per common share	$	3.55	$	4.34	$	1.02
Diluted earnings per common share and common share equivalents	$	3.45	$	4.20	$	1.00

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

		2018				2017				2016
Anti-dilutive options – weighted average			513				449				2,043

Note 13 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year Ended December 31,
	2018			2017			2016
Current provision −
Federal	$	31,819		$	22,443		$	15,236
State		6,291			4,030			2,300
		38,110			26,473			17,536
Deferred provision −
Federal		6,082			(64,821	)		8,260
State		(85	)		2,618			71
		5,997			(62,203	)		8,331
Provision (benefit) for income taxes	$	44,107		$	(35,730	)	$	25,867

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year Ended December 31,
	2018		2017			2016
Income taxes at the federal statutory rate	$	38,469	$	47,749		$	23,255
State income taxes, net of federal benefit		4,913		3,246			1,552
Tax effect of permanent differences		596		(4,097	)		887
Revaluation of deferred taxes		−		(82,862	)		−
Other, net		129		234			173
(Benefit) provision for income taxes	$	44,107	$	(35,730	)	$	25,867

Schedule of Income Taxes Related to Other Comprehensive Income [Table Text Block]

	Year Ended December 31,
	2018		2017		2016
Income tax expense (benefit) related to components of other comprehensive income:
Change in fair value of available-for-sale securities		−		183		13
Total	$	−	$	183	$	13

Paid in capital – stock based compensation	$	−	$	−	$	294

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2018			2017
Deferred income tax (assets) liabilities:
Inventory	$	(4,076	)	$	(3,637	)
Accounts receivable		(231	)		(157	)
Capital lease obligations		(16,202	)		(19,480	)
Stock options		(9,026	)		(6,899	)
Accrued liabilities		(2,481	)		(2,533	)
State net operating loss carry forward		(2,463	)		(2,262	)
State tax credit		(312	)		(410	)
Other		(3,276	)		(3,627	)
Difference between book and tax basis- Depreciation and amortization		179,325			174,266
		141,258			135,261
Valuation allowance		50			50
Net deferred income tax liability	$	141,308		$	135,311

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	2018			2017			2016
Unrecognized tax benefits at beginning of period	$	2,555		$	2,401		$	2,332
Gross increases – tax positions in current year		504			619			429
Reductions due to lapse of statute of limitations		(670	)		(465	)		(360	)
Unrecognized tax benefits at end of period	$	2,389		$	2,555		$	2,401

Note 16 - Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Quarterly Financial Information [Table Text Block]

	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter
201 8

Revenues	$	1,240,781	$	1,348,831	$	1,376,136	$	1,540,442
Gross profit		226,995		243,377		249,057		258,840
Operating income		32,389		43,426		58,649		68,387
Income before income taxes		28,083		38,932		54,181		61,973
Net income	$	21,039	$	29,389	$	41,665	$	46,969

Earnings per share:
Basic	$	0.53	$	0.75	$	1.06	$	1.22
Diluted	$	0.51	$	0.72	$	1.03	$	1.20

201 7

Revenues	$	1,044,797	$	1,203,523	$	1,257,459	$	1,208,103
Gross profit		187,907		209,072		220,048		212,909
Operating income		24,849		37,407		48,436		38,017
Income before income taxes		22,058		34,583		45,335		34,423
Net income	$	14,479	$	21,999	$	29,784	$	105,867

Earnings per share:
Basic	$	0.37	$	0.55	$	0.75	$	2.65
Diluted	$	0.36	$	0.54	$	0.72	$	2.54

Note 17 - Segments (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Truck		All
	Segment		Other			Totals
201 8
Revenues from external customers	$	5,488,787	$	17,403		$	5,506,190
Interest income		1,376		–			1,376
Interest expense		20,850		208			21,058
Depreciation and amortization		70,170		319			70,489
Segment operating income		202,725		126			202,851
Segment income (loss) from continuing operations before taxes		183,251		(82	)		183,169
Segment assets		3,166,174		35,176			3,201,350
Goodwill		288,831		2,560			291,391
Expenditures for segment assets		238,229		31			238,260

201 7
Revenues from external customers	$	4,698,035	$	15,847		$	4,713,882
Interest income		891		–			891
Interest expense		13,024		177			13,201
Depreciation and amortization		49,634		435			50,069
Segment operating income (loss)		149,338		(629	)		148,709
Segment income (loss) from continuing operations before taxes		137,205		(806	)		136,399
Segment assets		2,855,001		35,138			2,890,139
Goodwill		288,831		2,560			291,391
Expenditures for segment assets		209,852		65			209,917

201 6
Revenues from external customers	$	4,199,348	$	15,266		$	4,214,614
Interest income		621		–			621
Interest expense		14,740		160			14,900
Depreciation and amortization		50,771		490			51,261
Segment operating income (loss)		81,483		(756	)		80,728
Segment income (loss) from continuing operations before taxes		67,364		(915	)		66,449
Segment assets		2,570,016		33,031			2,603,047
Goodwill		287,631		2,560			290,191
Expenditures for segment assets		196,704		261			196,965

Note 20 - Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year Ended December 31, 2018
Commercial vehicle sales revenue	$	3,558,637
Parts revenue		937,241
Commercial vehicle repair service revenue		732,811
Finance revenue		10,795
Insurance revenue		9,740
Other revenue		18,728
Total	$	5,267,952

Note 2 - Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Depreciation, Total			$ 149,100,000	$ 140,300,000	$ 140,600,000
Amortization, Total			36,000,000	17,600,000	17,000,000
Capitalized Computer Software, Net, Ending Balance	$ 10,800,000	$ 31,900,000	10,800,000	31,900,000
Capitalized Computer Software, Amortization			21,700,000	3,400,000
Indefinite-Lived Franchise Rights	7,000,000	7,000,000	7,000,000	7,000,000
Goodwill, Impairment Loss	0
Advertising Expense			10,400,000	9,500,000	6,800,000
Capitalized Computer Software, Accumulated Amortization	8,300,000	20,000,000	8,300,000	20,000,000
Subsequent Event [Member] \| Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset						$ 51,900,000
Operating Lease, Liability, Total						$ 51,900,000
Vehicles [Member]
Depreciation, Total			114,600,000	$ 107,900,000	$ 106,300,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net, Total	66,400,000		66,400,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation	44,600,000		44,600,000
Computer Software, Intangible Asset [Member]
Interest Costs Capitalized			357,600
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 0
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,900,000		1,900,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	1,900,000		1,900,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,900,000		1,900,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,900,000		1,900,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 1,900,000		1,900,000
Components of ERP Platform Rquired Replacement [Member]
Capitalized Computer Software, Amortization			$ 19,900,000

Note 2 - Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accumulated depreciation and amortization	$ (576,345)	$ (514,929)
Total	1,184,053	1,159,595
Land [Member]
Property and equipment, gross	134,873	129,805
Building and Building Improvements [Member]
Property and equipment, gross	$ 434,049	404,679
Building and Building Improvements [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	10 years
Building and Building Improvements [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	39 years
Leasehold Improvements [Member]
Property and equipment, gross	$ 27,165	26,765
Leasehold Improvements [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	2 years
Leasehold Improvements [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	39 years
Machinery and Equipment [Member]
Property and equipment, gross	$ 73,578	65,694
Machinery and Equipment [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	5 years
Machinery and Equipment [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	20 years
Furniture and Fixtures [Member]
Property and equipment, gross	$ 67,330	63,475
Furniture and Fixtures [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	15 years
Transportation Equipment [Member]
Property and equipment, gross	$ 92,385	81,158
Transportation Equipment [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	2 years
Transportation Equipment [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	15 years
Vehicles [Member]
Property and equipment, gross	$ 914,708	894,905
Vehicles [Member] \| Minimum [Member]
Property and equipment, estimated life (Year)	2 years
Vehicles [Member] \| Maximum [Member]
Property and equipment, estimated life (Year)	8 years
Construction in Progress [Member]
Property and equipment, gross	$ 16,310	$ 8,043

Note 2 - Significant Accounting Policies - Goodwill (Details) $ in Thousands	24 Months Ended
	Dec. 31, 2018 USD ($)
Goodwill, balance	$ 290,191
Acquisition	1,200
Goodwill, balance	$ 291,391

Note 2 - Significant Accounting Policies - Fair Value Assumption (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Expected stock volatility	31.68%	33.54%	35.63%
Weighted-average stock volatility	31.68%	33.54%	35.63%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	2.69%	2.17%	1.64%
Expected life (Year)	6 years	6 years	6 years
Weighted-average fair value of stock options granted (in dollars per share)	$ 15.46	$ 12.33	$ 6.54

Note 3 - Supplier Concentration (Details Textual)	12 Months Ended
Note 3 - Supplier Concentration (Details Textual)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Product Concentration Risk [Member] \| Sales Revenue, Goods, Net [Member]
Concentration Risk, Percentage	62.50%	65.20%	61.00%

Note 4 - Accounts Receivable - Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Warranty claims	$ 10,427	$ 9,473
Other accounts receivable	20,910	12,753
Less allowance for bad debt and warranty claims	(1,416)	(826)
Total	190,650	183,875
Trade Accounts Receivable From Sale of Vehicles [Member]
Trade receivables	100,013	104,779
Trade Receivable Other Than Vehicles [Member]
Trade receivables	$ 60,716	$ 57,697

Note 5 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
New commercial vehicles	$ 976,464	$ 747,531
Used commercial vehicles	96,126	76,488
Parts and accessories	259,396	205,534
Other	19,573	15,924
Less allowance	(11,636)	(12,183)
Total	$ 1,339,923	$ 1,033,294

Note 6 - Valuation Accounts - Valuation and Allowance Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance	$ 616	$ 549	$ 506
Net Charged to Costs and Expenses	2,183	625	1,415
Net Write-Offs	(1,812)	(558)	(1,372)
Balance End of Year	987	616	549
Allowance for Warranty Receivables From Manufacturers [Member]
Balance	210	114	105
Net Charged to Costs and Expenses	2,031	713	833
Net Write-Offs	(1,812)	(617)	(824)
Balance End of Year	429	210	114
Parts Inventory [Member]
Balance	6,230	4,885	7,291
Net Charged to Costs and Expenses	2,744	1,414	3,400
Net Write-Offs	(1,924)	(69)	(5,806)
Balance End of Year	7,050	6,230	4,885
Commercial Vehicle Inventory [Member]
Balance	5,953	5,102	6,541
Net Charged to Costs and Expenses	3,550	5,997	9,623
Net Write-Offs	(4,916)	(5,146)	(11,062)
Balance End of Year	$ 4,587	$ 5,953	$ 5,102

Note 7 - Floor Plan Notes Payable and Lines of Credit (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Line of Credit Facility, Maximum Borrowing Capacity	$ 17,500,000
Floor Plan Notes Payable	1,023,019,000	$ 778,561,000
Long-term Line of Credit, Total	0
Line of Credit Amount Pledged to Secure Letters of Credit	11,600,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 5,900,000
Floor Plan Credit Agreement [Member]
Debt, Weighted Average Interest Rate	1.90%	1.40%
BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 875,000,000
Debt Instrument, Working Capital Fee Percentage	0.16%
Floor Plan Notes Payable	$ 798,400,000
BMO Harris Bank N.A. [Member] \| IfTermination Occurs after July 1, 2018 and Prior to June 30, 2019 [Member]
Debt Instrument, Prepayment Processing Fee Amount	$ 500,000
BMO Harris Bank N.A. [Member] \| Floor Plan Credit Agreement [Member]
Debt Instrument, Interest Rate, Effective Percentage	4.26%
BMO Harris Bank N.A. [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.51%
Ford Motor Financing Agreement [Member]
Floor Plan Notes Payable	$ 139,000,000
Debt Instrument, Variable Rate, Minimum Reference Rate	7.00%
Ford Motor Financing Agreement [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Revolving Credit Facility [Member] \| BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000,000
Long-term Line of Credit, Total	0
Letter of Credit [Member] \| BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000,000

Note 7 - Floor Plan Notes Payable and Lines of Credit - Assets Pledged as Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventories, new and used vehicles at cost based on specific identification, net of allowance	$ 1,068,003	$ 818,066
Vehicle sale related accounts receivable	100,013	104,779
Total	1,168,016	922,845
Floor Plan Notes Payable	$ 1,023,019	$ 778,561

Note 8 - Long-term Debt (Details Textual)	12 Months Ended
Note 8 - Long-term Debt (Details Textual)	Dec. 31, 2018 USD ($)
Minimum [Member] \| Variable Interest Rate Notes [Member]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.00%
Debt Instrument, Periodic Payment, Total	$ 5,330
Minimum [Member] \| Fixed Interest Rate Notes [Member]
Debt Instrument, Periodic Payment, Total	$ 255
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.95%
Maximum [Member] \| Variable Interest Rate Notes [Member]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.50%
Debt Instrument, Periodic Payment, Total	$ 125,833
Maximum [Member] \| Fixed Interest Rate Notes [Member]
Debt Instrument, Periodic Payment, Total	$ 72,315
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	7.61%

Note 8 - Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Variable interest rate term notes	$ 80,355	$ 96,157
Fixed interest rate term notes	520,818	515,371
Total	601,173	611,528
Less: current maturities	(161,955)	(145,139)
Total long-term debt, net of current maturities	$ 439,218	$ 466,389

Note 8 - Long-term Debt - Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
2019	$ 161,955
2020	158,815
2021	103,938
2022	88,155
2023	57,689
Thereafter	30,621
Total	$ 601,173	$ 611,528

Note 9 - Financial Instruments and Fair Value (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended			24 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)
Impairment of Real Estate					$ 7,500
Number of Real Estate Properties Sold During Period	1		4	3		7
Real Estate Held-for-sale	$ 4,700		$ 4,700	$ 8,300		$ 8,300
Number of Real Estate Properties Put Back into Service	1	1
Real Estate Previously Held-for-sale Put Back Into Service	$ 2,600	$ 1,400
Auction Rate Securities [Member]
Debt Securities, Available-for-sale, Total	$ 0		$ 0	$ 6,400		$ 6,400

Note 9 - Financial Instruments and Fair Value - Pre-tax Effect of Interest Rate Swaps (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Long-lived assets held for sale, fair value	$ 2,269

Note 10 - Leasing Activities (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Guaranteed Residual Value Under Capital Lease Arrangements	$ 38,000,000
Land and Building [Member]
Operating Leases, Rent Expense, Total	10,700,000	$ 9,500,000	$ 10,300,000
Vehicle Leases as Lessee 1 [Member]
Operating Leases, Rent Expense, Total	2,500,000	900,000	1,300,000
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	72,800,000
Vehicle Leases as Lessor [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	209,300,000	187,400,000	182,100,000
Operating Leases, Income Statement, Contingent Revenue	30,000,000	29,000,000	$ 27,800,000
Property Subject to or Available for Operating Lease, Net, Total	576,000,000	584,400,000
Property Subject to or Available for Operating Lease, Accumulated Depreciation	338,700,000	$ 310,500,000
Minimum [Member] \| Land and Building [Member]
Monthly Rental Payment Operating Lease	$ 275
Minimum [Member] \| Vehicle Leases as Lessee 1 [Member]
Lease Term	1 year
Minimum [Member] \| Vehicle Leases as Lessor [Member]
Lease Term	1 year
Maximum [Member] \| Land and Building [Member]
Monthly Rental Payment Operating Lease	$ 38,091
Maximum [Member] \| Vehicle Leases as Lessee 1 [Member]
Lease Term	10 years
Maximum [Member] \| Vehicle Leases as Lessor [Member]
Lease Term	10 years

Note 10 - Leasing Activities - Future Minimum Lease Payments Under Capital and Non-cancelable Vehicle Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Less current portion	$ (19,631)	$ (17,119)
Obligations under capital leases less current portion	49,483	$ 66,022
Vehicle Leases as Lessee 1 [Member]
2019, Capital Leases	22,033
2019	3,580
2020, Capital Leases	19,113
2020	3,264
2021, Capital Leases	14,894
2021	2,764
2022, Capital Leases	11,062
2022	2,479
2023, Capital Leases	5,095
2023	1,957
Thereafter, Capital Leases	2,963
Thereafter	1,246
Total minimum lease payments, Capital Leases	75,160
Total minimum lease payments, Operating Leases	15,290
Less amount representing interest, Capital Leases	(6,046)
Present value of net minimum capital lease payments	69,114
Less current portion	(19,631)
Obligations under capital leases less current portion	$ 49,483

Note 10 - Leasing Activities - Future Minimum Rental Receivable (Details) $ in Thousands	Dec. 31, 2018 USD ($)
2019	$ 97,906
2020	79,784
2021	57,486
2022	37,212
2023	21,813
Thereafter	12,980
Total	$ 307,181

Note 10 - Leasing Activities - Future Minimum Lease Payments Under Operating Leases (Details) - Land and Building [Member] $ in Thousands	Dec. 31, 2018 USD ($)
2019	$ 8,715
2020	7,202
2021	5,426
2022	4,599
2023	3,239
Thereafter	21,217
Total	$ 50,398

Note 11 - Share Based Compensation and Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 16, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	459,663
Allocated Share-based Compensation Expense, Total	$ 18,100,000	$ 15,600,000	$ 12,900,000
Proceeds from Stock Options Exercised	5,700,000	24,800,000	6,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	2,700,000	25,000,000	4,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 5,700,000	$ 6,300,000	$ 5,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 15.46	$ 12.33	$ 6.54
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 8,100,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 109 days
Deferred Compensation Plan [Member]
Deferred Compensation Arrangement with Individual, Vested Percentage	100.00%
Deferred Compensation Liability, Current, Total	$ 11,100,000	$ 9,800,000
Cash Surrender Value of Life Insurance	$ 8,900,000	9,600,000
Rush 401 Plan [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	10.00%
Defined Contribution Plan, Cost	$ 8,900,000	$ 7,000,000	$ 6,500,000
Rush 401 Plan [Member] \| Highly Compensated Employees [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	15.00%
Rush 401 Plan [Member] \| Employees with Less than Five Years of Service [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	20.00%
Rush 401 Plan [Member] \| Employees with More Than Five Years of Service [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	40.00%
Rush 401 Plan [Member] \| Minimum [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	1.00%
Rush 401 Plan [Member] \| Maximum [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	50.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 6,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 40.46	$ 31.37	$ 17.57
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 7,100,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 328 days
Common Class A [Member]
Share Price	$ 34.48
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Maximum Fair Value for Employee Stock Purchase Per Year	$ 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	331,000
Common Stock, Capital Shares Reserved for Future Issuance	1,400,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	84,192	112,754
Number of Employees Eligible to Participate in Stock Purchase Plan	7,214
Number of Employees Participating in Stock Purchase Plan	1,495
The 2006 Non-Employee Director Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	500,000
Issuance of Cash for Non-employee Director Compensation, Percent	40.00%
Issuance of Stock and Cash for Non-employee Director Compensation	$ 125,000
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	140,300
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	500,000
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total	11,412	13,393
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member] \| Shares Issued to Two Nonemployee Directors [Member]
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued	2,926	3,307
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member] \| Shares Issued to One Nonemployee Director [Member]
Issuance of Stock and Cash for Non-employee Director Compensation		$ 125,000
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued	2,048	1,984
Payment to Nonemployee Directors	$ 37,500	$ 50,000
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member] \| Shares Issued to Two Nonemployee Directors 2 [Member]
Issuance of Stock and Cash for Non-employee Director Compensation	$ 125,000
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued	1,756
Payment to Nonemployee Directors	$ 50,000
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member] \| Shares Issued to One Non-Employee Director 2 [Member]
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued		2,315
Payment to Nonemployee Directors		$ 37,500
The 2006 Non-Employee Director Stock Option Plan [Member] \| Common Class A [Member] \| Shares Issued to One Non-Employee Director 3 [Member]
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued		2,480
Payment to Nonemployee Directors		$ 31,250
Amended and Restated 2007 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Amended and Restated 2007 Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Amended and Restated 2007 Incentive Plan [Member] \| Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,781,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	7,800,000			7,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	459,663	472,463
Amended and Restated 2007 Incentive Plan [Member] \| Common Class B [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				2,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee	100,000
Amended and Restated 2007 Incentive Plan [Member] \| Common Class B [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	762,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	306,590	274,390
Every 6 Months [Member] \| Employee Stock Purchase Plan [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount	$ 10,625

Note 11 - Share Based Compensation and Employee Benefit Plans - Stock Option (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Balance (in shares) \| shares	2,724,308
Balance, weighted average exercise price (in dollars per share) \| $ / shares	$ 24.78
Granted (in shares) \| shares	459,663
Granted, weighted average exercise price (in dollars per share) \| $ / shares	$ 42.99
Exercised (in shares) \| shares	(126,027)
Exercised, weighted average exercise price (in dollars per share) \| $ / shares	$ 21.77
Forfeited (in shares) \| shares	(73,664)
Forfeited, weighted average exercise price (in dollars per share) \| $ / shares	$ 28.21
Balance (in shares) \| shares	2,984,280
Balance, weighted average exercise price (in dollars per share) \| $ / shares	$ 27.63
Balance, weighted average remaining contractual life (Year)	6 years 14 days
Aggregate intrinsic value \| $	$ 24,290,404
Expected to vest (in shares) \| shares	1,750,298
Expected to vest, weighted average exercise price (in dollars per share) \| $ / shares	$ 30.62
Expected to vest, weighted average remaining contractual life (Year)	7 years 229 days
Expected to vest, aggregate intrinsic value \| $	$ 10,524,034
Vested and exercisable (in shares) \| shares	1,187,924
Vested and exercisable, weighted average exercise price (in dollars per share) \| $ / shares	$ 23.15
Vested and exercisable, weighted average remaining contractual life (Year)	3 years 233 days
Vested and exercisable, aggregate intrinsic value \| $	$ 13,457,583

Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Non-vested balance (in shares)	1,836,062
Non-vested, weighted average grant date fair value (in dollars per share)	$ 11.12
Granted (in shares)	459,663
Weighted-average fair value of stock options granted (in dollars per share)	$ 15.46	$ 12.33	$ 6.54
Vested (in shares)	(430,040)
Vested, weighted average grant date fair value (in dollars per share)	$ 13.26
Forfeited (in shares)	(69,329)
Forfeited, weighted average grant date fair value (in dollars per share)	$ 10.73
Non-vested balance (in shares)	1,796,356	1,836,062
Non-vested, weighted average grant date fair value (in dollars per share)	$ 11.74	$ 11.12

Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Restricted Stock Awards and RSU's (Details) - Restricted Stock [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Outstanding non-vested shares (in shares)	540,132
Outstanding non-vested, weighted average grant date fair value (in dollars per share)	$ 25.71
Granted (in shares)	306,590
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 40.46
Vested (in shares)	(267,588)
Vested, weighted average grant date fair value (in dollars per share)	$ 24.57
Forfeited (in shares)	(6,000)
Forfeited, weighted average grant date fair value (in dollars per share)	$ 33.62
Outstanding non-vested shares (in shares)	573,134	540,132
Outstanding non-vested, weighted average remaining contractual life (Year)	8 years 219 days
Outstanding non-vested, aggregate intrinsic value	$ 20,402,823
Outstanding non-vested, weighted average grant date fair value (in dollars per share)	$ 34.07	$ 25.71
Expected to vest (in shares)		571,974
Expected to vest, weighted average remaining contractual life (Year)	8 years 219 days
Expected to vest, aggregate intrinsic value	$ 20,361,531

Note 12 - Earnings Per Share (Details Textual)	12 Months Ended
Note 12 - Earnings Per Share (Details Textual)	Dec. 31, 2018
Common Class A [Member]
Common Stock, Voting Rights	1/20th
Common Class B [Member]
Common Stock, Voting Rights	1

Note 12 - Earnings Per Share - Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income available to common shareholders	$ 139,062	$ 172,129	$ 40,582
Denominator for basic earnings per share – weighted average shares outstanding (in shares)	39,223	39,627	39,938
Employee and director stock options and restricted share awards (in shares)	1,070	1,353	665
Denominator for diluted earnings per share - adjusted weighted average shares outstanding and assumed conversions (in shares)	40,293	40,980	40,603
Basic earnings per common share (in dollars per share)	$ 3.55	$ 4.34	$ 1.02
Diluted earnings per common share and common share equivalents (in dollars per share)	$ 3.45	$ 4.20	$ 1

- Definition

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

- Definition

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

Note 12 - Earnings Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Anti-dilutive options – weighted average (in shares)	513	449	2,043

Note 13 - Income Taxes (Details Textual) - USD ($)		12 Months Ended
Note 13 - Income Taxes (Details Textual) - USD ($)	Dec. 22, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	21.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 100,000	$ (82,900,000)
Deferred Tax Assets, Valuation Allowance, Total		50,000	50,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		2,400,000	2,600,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense		(27,450)	21,050	$ 34,800
Unrecognized Tax Benefits, Income Tax Penalties Accrued		0	0	0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		139,000	$ 166,000	$ 145,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		$ 51,000,000
Open Tax Year		2015 2016 2017 2018
State and Local Jurisdiction [Member] \| Deferred Tax Assets Related to Operating Loss Carryforwards [Member]
Deferred Tax Assets, Valuation Allowance, Total		$ 50,000
Domestic Tax Authority [Member]
Open Tax Year		2016 2017 2018

Note 13 - Income Taxes - Income Tax Expense (Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current provision -
Federal	$ 31,819	$ 22,443	$ 15,236
State	6,291	4,030	2,300
Total current	38,110	26,473	17,536
Deferred provision -
Federal	6,082	(64,821)	8,260
State	(85)	2,618	71
Total deferred	5,997	(62,203)	8,331
Provision (benefit) for income taxes	$ 44,107	$ (35,730)	$ 25,867

Note 13 - Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income taxes at the federal statutory rate	$ 38,469	$ 47,749	$ 23,255
State income taxes, net of federal benefit	4,913	3,246	1,552
Tax effect of permanent differences	596	(4,097)	887
Revaluation of deferred taxes		(82,862)
Other, net	129	234	173
Provision (benefit) for income taxes	$ 44,107	$ (35,730)	$ 25,867

Note 13 - Income Taxes - Components of Income Taxes Related to Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income tax expense (benefit) related to components of other comprehensive income:
Change in fair value of available-for-sale securities		$ 183	$ 13
Total		183	13
Paid in capital – stock based compensation	$ 0		$ 294

Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred income tax (assets) liabilities:
Inventory	$ (4,076)	$ (3,637)
Accounts receivable	(231)	(157)
Capital lease obligations	(16,202)	(19,480)
Stock options	(9,026)	(6,899)
Accrued liabilities	(2,481)	(2,533)
State net operating loss carry forward	(2,463)	(2,262)
State tax credit	(312)	(410)
Other	(3,276)	(3,627)
Difference between book and tax basis- Depreciation and amortization	179,325	174,266
Total	141,258	135,261
Deferred Tax Assets, Valuation Allowance, Total	50	50
Net deferred income tax liability	$ 141,308	$ 135,311

Note 13 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrecognized tax benefits at beginning of period	$ 2,555	$ 2,401	$ 2,332
Gross increases – tax positions in current year	504	619	429
Reductions due to lapse of statute of limitations	(670)	(465)	(360)
Unrecognized tax benefits at end of period	$ 2,389	$ 2,555	$ 2,401

Note 14 - Commitments and Contingencies (Details Textual) $ in Millions	Dec. 31, 2018 USD ($)
Construction Contracts for Facilities [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 10.0
Information Technology Contracts [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 2.8

Note 15 - Acquisitions (Details Textual) $ in Millions	Dec. 14, 2017 USD ($)
Transwest San Diego, LLC [Member]
Business Combination, Consideration Transferred, Total	$ 2.2

Note 16 - Unaudited Quarterly Financial Data - Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total revenue	$ 1,540,442	$ 1,376,136	$ 1,348,831	$ 1,240,781	$ 1,208,103	$ 1,257,459	$ 1,203,523	$ 1,044,797	$ 5,506,190	$ 4,713,882	$ 4,214,614
Gross profit	258,840	249,057	243,377	226,995	212,909	220,048	209,072	187,907	978,269	829,936	718,012
Operating income	68,387	58,649	43,426	32,389	38,017	48,436	37,407	24,849	202,851	148,709	80,728
Income before income taxes	61,973	54,181	38,932	28,083	34,423	45,335	34,583	22,058	183,169	136,399	66,449
Net income	$ 46,969	$ 41,665	$ 29,389	$ 21,039	$ 105,867	$ 29,784	$ 21,999	$ 14,479	$ 139,062	$ 172,129	$ 40,582
Basic (in dollars per share)	$ 1.22	$ 1.06	$ 0.75	$ 0.53	$ 2.65	$ 0.75	$ 0.55	$ 0.37	$ 3.55	$ 4.34	$ 1.02
Diluted (in dollars per share)	$ 1.20	$ 1.03	$ 0.72	$ 0.51	$ 2.54	$ 0.72	$ 0.54	$ 0.36	$ 3.45	$ 4.20	$ 1

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Note 17 - Segments (Details Textual)	12 Months Ended
Note 17 - Segments (Details Textual)	Dec. 31, 2018
Truck Segment [Member]
Number of Reportable Segments	1
Other Segments [Member]
Number of Operating Segments	3

Note 17 - Segments - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from external customers	$ 1,540,442	$ 1,376,136	$ 1,348,831	$ 1,240,781	$ 1,208,103	$ 1,257,459	$ 1,203,523	$ 1,044,797	$ 5,506,190	$ 4,713,882	$ 4,214,614
Interest income									1,376	891	621
Interest expense									21,058	13,201	14,900
Depreciation and amortization									70,489	50,069	51,261
Segment operating income	68,387	58,649	43,426	32,389	38,017	48,436	37,407	24,849	202,851	148,709	80,728
Segment income (loss) from continuing operations before taxes	61,973	$ 54,181	$ 38,932	$ 28,083	34,423	$ 45,335	$ 34,583	$ 22,058	183,169	136,399	66,449
Segment assets	3,201,350				2,890,139				3,201,350	2,890,139	2,603,047
Goodwill	291,391				291,391				291,391	291,391	290,191
Expenditures for segment assets									238,260	209,917	196,965
Truck Segment [Member]
Revenues from external customers									5,488,787	4,698,035	4,199,348
Interest income									1,376	891	621
Interest expense									20,850	13,024	14,740
Depreciation and amortization									70,170	49,634	50,771
Segment operating income									202,725	149,338	81,483
Segment income (loss) from continuing operations before taxes									183,251	137,205	67,364
Segment assets	3,166,174				2,855,001				3,166,174	2,855,001	2,570,016
Goodwill	288,831				288,831				288,831	288,831	287,631
Expenditures for segment assets									238,229	209,852	196,704
Other Segments [Member]
Revenues from external customers									17,403	15,847	15,266
Interest income
Interest expense									208	177	160
Depreciation and amortization									319	435	490
Segment operating income									126	(629)	(756)
Segment income (loss) from continuing operations before taxes									(82)	(806)	(915)
Segment assets	35,176				35,138				35,176	35,138	33,031
Goodwill	$ 2,560				$ 2,560				2,560	2,560	2,560
Expenditures for segment assets									$ 31	$ 65	$ 261

Note 18 - Related Party Transactions (Details Textual) - CCTTS [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
Due from Related Parties, Total	$ 11.9	$ 12.9
London Interbank Offered Rate (LIBOR) [Member]
Related Party Transaction, Rate	4.00%
Maximum [Member]
Related Party Transaction, Amounts of Transaction	$ 17.0

Note 19 - Restructuring Costs (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended			24 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)
Asset Impairment Charges, Total					$ 8,247
Number of Real Estate Properties Sold During Period	1		4	3		7
Real Estate Held-for-sale	$ 4,700		$ 4,700	$ 8,300		$ 8,300
Number of Real Estate Properties Put Back into Service	1	1
Real Estate Previously Held-for-sale Put Back Into Service	$ 2,600	$ 1,400
Operating Segments [Member]
Restructuring and Related Costs, Incurred Cost, Total					8,900
Operating Segments [Member] \| Selling, General and Administrative Expenses [Member]
Asset Impairment Charges, Total					$ 8,200

Note 20 - Revenue - Disaggregated Revenue by Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue	$ 5,267,952
Commercial Vehicle [Member]
Revenue	3,558,637
Parts [Member]
Revenue	937,241
Commercial Vehicle Repair Service [Member]
Revenue	732,811
Financial Service [Member]
Revenue	10,795
Insurance [Member]
Revenue	9,740
Product and Service, Other [Member]
Revenue	$ 18,728	$ 14,257	$ 15,503

Note 21 - Subsequent Event (Details Textual) - Subsequent Event [Member] - Rush Truck Centers [Member] $ in Millions	Feb. 06, 2019 CAD ($)
Business Acquisition, Percentage of Voting Interests Acquired	50.00%
Business Combination, Consideration Transferred, Total	$ 30