Rush Enterprises (RUSHA) 10-K 1 Mar 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 16, 2018	Jun. 30, 2017
Document Information [Line Items]
Entity Registrant Name	RUSH ENTERPRISES INC \TX\
Entity Central Index Key	1,012,019
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 Public Float			$ 1,310,859,219
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		31,400,734
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		8,433,777

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 124,541	$ 82,026
Accounts receivable, net	183,875	156,199
Note receivable affiliate	11,914	10,166
Inventories, net	1,033,294	840,304
Prepaid expenses and other	11,969	8,798
Assets held for sale	9,505	13,955
Total current assets	1,375,098	1,111,448
Investments	6,375	6,231
Property and equipment, net	1,159,595	1,135,805
Goodwill, net	291,391	290,191
Other assets, net	57,680	59,372
Total assets	2,890,139	2,603,047
Current liabilities:
Floor plan notes payable	778,561	646,945
Current maturities of long-term debt	145,139	130,717
Current maturities of capital lease obligations	17,119	14,449
Liabilities directly associated with assets held for sale		783
Trade accounts payable	107,906	97,844
Customer deposits	27,350	18,418
Accrued expenses	96,132	83,974
Total current liabilities	1,172,207	993,130
Long-term debt, net of current maturities	466,389	472,503
Capital lease obligations, net of current maturities	66,022	70,044
Other long-term liabilities	9,837	7,214
Deferred income taxes, net	135,311	197,331
Shareholders’ equity:
Preferred stock, par value $.01 per share; 1,000,000 shares authorized; 0 shares outstanding in 2017 and 2016	0	0
Common stock, par value $.01 per share; 60,000,000 Class A shares and 20,000,000 Class B shares authorized; 31,345,116 Class A shares and 8,469,247 Class B shares outstanding in 2017; and 30,007,088 Class A shares and 9,245,447 Class B shares outstanding in 2016	454	438
Additional paid-in capital	348,044	309,127
Treasury stock, at cost: 934,171 class A shares and 4,625,181 class B shares in 2017 and 934,171 class A shares and 3,650,491 class B shares in 2016	(120,682)	(86,882)
Retained earnings	812,557	640,428
Accumulated other comprehensive loss, net of tax		(286)
Total shareholders’ equity	1,040,373	862,825
Total liabilities and shareholders’ equity	$ 2,890,139	$ 2,603,047

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
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)	31,345,116	30,007,088
Treasury stock (in shares)	934,171	934,171
Common Class B [Member]
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, outstanding (in shares)	8,469,247	9,245,447
Treasury stock (in shares)	4,625,181	3,650,491

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
New and used commercial vehicle sales	$ 2,993,015	$ 2,640,019	$ 3,360,808
Aftermarket products and services sales	1,471,266	1,332,356	1,382,447
Lease and rental	217,356	208,154	199,867
Finance and insurance	17,988	18,582	21,150
Other	14,257	15,503	15,461
Total revenue	4,713,882	4,214,614	4,979,733
Cost of products sold:
New and used commercial vehicle sales	2,766,461	2,463,124	3,138,754
Aftermarket products and services sales	934,394	851,438	879,141
Lease and rental	183,091	182,040	176,891
Total cost of products sold	3,883,946	3,496,602	4,194,786
Gross profit	829,936	718,012	784,947
Selling, general and administrative	631,053	587,778	619,268
Depreciation and amortization	50,069	51,261	43,859
Gain (loss) on sale of assets	(105)	1,755	(544)
Operating income	148,709	80,728	121,276
Interest income (expense):
Interest income	891	621	490
Interest expense	(13,201)	(14,900)	(13,963)
Total interest expense, net	12,310	14,279	13,473
Income before taxes	136,399	66,449	107,803
Income tax (benefit) provision	(35,730)	25,867	41,750
Net income	$ 172,129	$ 40,582	$ 66,053
Earnings per common share:
Basic (in dollars per share)	$ 4.34	$ 1.02	$ 1.64
Diluted (in dollars per share)	$ 4.20	$ 1	$ 1.61

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 172,129	$ 40,582	$ 66,053
Other comprehensive income before tax and net of reclassification adjustments:
Change in fair value of interest rate swaps			235
Change in fair value of available-for-sale securities	469	32	19
Other comprehensive income, before tax	469	32	254
Income tax expense related to components of other comprehensive income	183	13	99
Other comprehensive income, net of tax	286	19	155
Comprehensive income	$ 172,415	$ 40,601	$ 66,208

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]Common Class A [Member]	Common Stock [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, 2014	29,889,000	9,999,000
Balance at Dec. 31, 2014			$ 424	$ 272,486	$ (41,904)	$ 533,793	$ (460)	$ 764,339
Stock options exercised and stock awards (in shares)	182,000
Stock options exercised and stock awards			2	1,933				1,935
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan				12,384				12,384
Vesting of restricted share awards (in shares)	147,000	150,000
Vesting of restricted share awards			3	(572)				(569)
Issuance of common stock under employee stock purchase plan (in shares)	86,000
Issuance of common stock under employee stock purchase plan			1	2,063				2,064
Common stock repurchases (in shares)		(56,000)
Common stock repurchases					(1,464)			(1,464)
Other comprehensive income							155	155
Net income						66,053		66,053
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							1,205,281
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

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Additional Paid-in Capital [Member]
Stock options exercised and stock awards, tax	$ 294	$ 337

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 172,129,000	$ 40,582,000	$ 66,053,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	157,951,000	157,627,000	144,935,000
Loss (gain) on sale of property and equipment, net	105,000	(1,755,000)	544,000
Loss on impairment of assets		8,247,000
Stock-based compensation expense related to employee stock options and employee stock purchases	15,606,000	12,875,000	12,384,000
(Benefit) provision for deferred income tax expense	(62,203,000)	8,331,000	31,645,000
Excess tax expense from stock-based compensation		294,000	337,000
Change in accounts receivable, net	(29,424,000)	1,673,000	11,921,000
Change in inventories	(147,453,000)	291,773,000	18,664,000
Change in prepaid expenses and other, net	(3,383,000)	24,155,000	(3,690,000)
Change in trade accounts payable	8,964,000	(22,411,000)	(4,154,000)
Draws (payments) on floor plan notes payable – trade, net	19,355,000	3,989,000	(17,005,000)
Change in customer deposits	8,932,000	(4,020,000)	(22,371,000)
Change in accrued expenses	12,158,000	(190,000)	(12,013,000)
Net cash provided by operating activities	152,737,000	521,170,000	227,250,000
Cash flows from investing activities:
Acquisition of property and equipment	(209,917,000)	(196,965,000)	(367,790,000)
Proceeds from the sale of property and equipment	3,968,000	12,494,000	3,319,000
Business acquisitions	(2,180,000)	(681,000)	(69,013,000)
Proceeds from the sale of available for sale securities	325,000	450,000	275,000
Other	1,241,000	(4,708,000)	(3,025,000)
Net cash used in investing activities	(206,563,000)	(189,410,000)	(436,234,000)
Cash flows from financing activities:
Draws (payments) on floor plan notes payable – non-trade, net	112,261,000	(211,802,000)	31,568,000
Proceeds from long-term debt	152,563,000	121,188,000	218,026,000
Principal payments on long-term debt	(145,038,000)	(164,940,000)	(154,685,000)
Principal payments on capital lease obligations	(12,449,000)	(23,479,000)	(14,506,000)
Proceeds from issuance of shares relating to employee stock options and employee stock purchases	23,327,000	8,260,000	3,766,000
Excess tax expense from stock-based compensation		(294,000)	(337,000)
Common stock repurchased	(33,800,000)	(43,514,000)	(1,464,000)
Debt issuance costs	(523,000)
Net cash provided by (used in) financing activities	96,341,000	(314,581,000)	82,368,000
Net increase (decrease) in cash and cash equivalents	42,515,000	17,179,000	(126,616,000)
Cash and cash equivalents, beginning of year	82,026,000	64,847,000	191,463,000
Cash and cash equivalents, end of year	124,541,000	82,026,000	64,847,000
Supplemental disclosure of cash flow information:
Interest	34,149,000	37,904,000	35,356,000
Income taxes paid (refunded), net	31,323,000	(10,939,000)	16,126,000
Noncash investing and financing activities:
Assets acquired under capital leases	$ 15,205,000	$ 24,207,000	$ 41,021,000

Note 1 - Organization and Opera

Note 1 - Organization and Operations	12 Months Ended
	Dec. 31, 2017
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 one

Note 2 - Significant Accounting

Note 2 - Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2. SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The consolidated financial statements presented herein include the account s 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 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 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 market value. Cost is determined by specific identification of new and used commercial vehicle inventory and by the first first P 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 $85,500 2017. 20 17 201 6 Estimated Life (Years) Land $ 129,805 $ 126,123 – Buildings and improvements 404,679 377,070 10 – 39 Leasehold improvements 26,765 26,925 2 – 39 Machinery and shop equipment 65,694 67,558 5 – 20 Furniture, fixtures and computers 63,475 73,912 3 – 15 Transportation equipment 81,158 73,156 2 – 15 Lease and rental vehicles 894,905 832,661 2 – 8 Construction in progress 8,043 11,921 Accumulated depreciation and amortization (514,929 ) (453,521 ) Total $ 1,159,595 $ 1,135,805 The Company recorded depreciation expense of $140.3 $17.6 December 31, 2017, $140.6 $17.0 December 31, 2016 $131.8 $13.1 December 31, 2015. As of December 31, 201 7, $79.8 $38.7 $107.9 December 31, 2017, $106.3 December 31, 2016 $101.1 December 31, 2015. 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 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 is required to measure the goodwill impairment loss. The second not No impairment write down was required in the fourth 2017. T he following table sets forth the change in the carrying amount of goodwill for the Company for the years ended December 31, 2017 2016 Balance January 1, 2016 $ 285,041 Acquisitions and adjustments 5,150 Balance December 31, 201 6 290,191 Acquisition 1,200 Balance December 31, 201 7 $ 291,391 Other Assets T he total capitalized costs of the Company’s Enterprise Resource Planning software platform (“ERP Platform”) of $31.9 $20.0 15 Amortization expense relating to the ERP Platform, which is recognized in depreciation and amortization expense in the Consolidated Statements of Income, was $3.4 for the year ended December 31, 2017 , $3.4 for the year ended December 31, 2016 , and $3.3 for the year ended December 31, 2015 . See Note 21 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 December 31, 2017 December 31, 2016, no not 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 may 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. No impairment write down was required in the fourth 2017. 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 not not ’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 Additionally, despite the Company ’s belief that its tax return positions are consistent with applicable tax law, management expects that certain positions may no Revenue Recognition Policies Income on the sale of a vehicle is recognized when the Company and a customer execute a purchase contract, delivery has occurred and there are no may third 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. Aftermarket Products and Services revenue is earned at the time the Company sells the parts to its customers or at the time the Company completes, and the customer accepts, the service work order related to service provided to the customer’s vehicle. Cost of Sales For the Company ’s new and used commercial vehicle operations and its parts operations, cost of sales consists primarily of the Company’s actual purchase price, less any applicable manufacturers’ incentives, for new and used commercial vehicles and parts. For the Company’s service and body shop 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 and interest expense on the lease and rental fleet owned and leased by the Company. There are no 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, 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. C ompensation 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 no may not may not 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: 20 17 20 16 20 15 Expected stock volatility 33.54 % 35.63 % 40.90 % Weighted-average stock volatility 33.54 % 35.63 % 40.90 % Expected dividend yield 0.00 % 0.00 % 0.00 % Risk-free interest rate 2.17 % 1.64 % 1.74 % Expected life (years) 6.0 6.0 6.0 Weighted-average fair value of stock options granted $ 12.33 $ 6.54 $ 11.27 The Company computes its historical stock price volatility in accordance with ASC topic 718 10. Advertising Costs Advertising costs are expensed as incurred . Advertising and marketing expense was $9.5 2017, $6.8 2016 $8.8 2015. 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, $31.9 December 31, 2017, $20.0 $33.0 $16.5 December 31, 2016. Insurance The Company is partially self-insured for a portion of the claims related to its property a nd casualty insurance programs. Accordingly, the Company is required to estimate expected losses to be incurred. The Company engages a third third not Fair Value Measurements The Company has various financial instruments that it must measure at fair value on a recurring basis, including certain available for sale securities and derivatives. See Note 9 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 Level 1 the Company has the ability to access at the measurement date. Level 2 not Level 3 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 one New Accounting Pronouncements In March 2016, No. 2016 09, “Improvements to Employee Share-Based Payment Accounting (Topic 718 January 1, 2017. $5.3 December 31, 2017, no not 2016 09 not In February 2016, No. 2016 02, Leases (Topic 842 12 December 15, 2018, 2016 02 January 1, 2019. 2016 02, In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 2014 09 2014 09 first 2018. two 2014 09 January 1, 2018 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. The team has identified the Company’s material revenue streams to be 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. The Company does not

Note 3 - Supplier Concentration

Note 3 - Supplier Concentration	12 Months Ended
	Dec. 31, 2017
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 June 2018 through March 2019 International July 2018 through May 2023 Isuzu Indefinite Hino Indefinite Ford Indefinite Blue Bird August 2018 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 65.2% December 31, 2017, 61.0% December 31, 2016, 59.6% December 31, 2015. Primary Lenders The Company purchases its new and used commercial vehicle inventories with the assistance of floor plan financing programs as described in Note 7 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 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

Note 4 - Accounts Receivable

Note 4 - Accounts Receivable	12 Months Ended
	Dec. 31, 2017
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, 201 7 2 016 Trade accounts receivable from sale of vehicles $ 104,779 $ 83,482 Trade receivables other than vehicles 57,697 42,876 Warranty claims 9,473 8,095 Other accounts receivable 12,753 22,409 Less allowance for bad debt and warranty claims (826 ) (663 ) Total $ 183,875 $ 156,199

Note 5 - Inventories

Note 5 - Inventories	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 . INVENTORIES The Company ’s inventories, net, consisted of the following (in thousands): December 31, 201 7 201 6 New commercial vehicles $ 747,531 $ 575,879 Used commercial vehicles 76,488 71,429 Parts and accessories 205,534 187,419 Other 15,924 15,564 Less allowance (12,183 ) (9,987 ) Total $ 1,033,294 $ 840,304

Note 6 - Valuation Accounts

Note 6 - Valuation Accounts	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
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 201 7 Reserve for accounts receivable $ 549 $ 625 $ (558 ) $ 616 Reserve for warranty receivable s 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 ) 5,953 201 6 Reserve for accounts receivable $ 506 $ 1,415 $ (1,372 ) $ 549 Reserve for warranty receivable s 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 2015 Reserve for accounts receivable $ 639 $ 992 $ (1,125 ) $ 506 Reserve for warranty receivable s 140 1,677 (1,712 ) 105 Reserve for parts inventory 5,067 4,215 (1,991 ) 7,291 Reserve for commercial vehicle inventory 10,644 8,417 (12,520 ) 6,541 Allowance for Doubtful Receivables The Company sells a majority of its customer accounts receivable on a non-recourse basis to a third third third not The Company provides an allowance for uncollectible warranty receivables. The Company evaluates the collect ability 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 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 Payab

Note 7 - Floor Plan Notes Payable and Lines of Credit	12 Months Ended
	Dec. 31, 2017
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 The interest rate under the Company’s Floor Plan Credit Agreement is the three 1.51%. 2.99% December 31, 2017. 0.16% 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, 120 may 1.0% July 1, 2018 $500,000 July 1, 2018 June 30, 2019, December 31, 2017, $656.1 In June 2012, 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 3.75%. December 31, 2017, 5.25% December 31, 2017, $82.0 The Company ’s weighted average interest rate for floor plan notes payable was 1.4% December 31, 2017, 1.6% December 31, 2016, Assets pledged as collateral were as follows (in thousands): December 31, 2017 2016 Inventories, new and used vehicles at cost based on specific identification, net of allowance $ 818,066 $ 642,205 Vehicle sale related accounts receivable 104,778 83,482 Total $ 922,844 $ 725,687 Floor plan notes payable related to vehicles $ 778,561 $ 646,945 Lines of Credit The Company has a secured line of credit that provides for a maximum borrowing of $17.5 no December 31, 2017; $11.9 $5.6 December 31, 2017. The Company has a Working Capital Facility with BMO Harris. The Working Capital Facility includes up to $100.0 $20.0 March 21, 2020 no December 31, 2017.

Note 8 - Long-term Debt

Note 8 - Long-term Debt	12 Months Ended
	Dec. 31, 2017
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, 20 17 20 16 Variable interest rate term notes $ 96,157 $ 107,894 Fixed interest rate term notes 515,371 495,326 Total debt 611,528 603,220 Less: current maturities (145,139 ) (130,717 ) Total long-term debt, net of current maturities $ 466,389 $ 472,503 As of December 31, 2017, 201 8 145,139 201 9 140,823 2020 144,163 2021 85,559 202 2 60,525 Thereafter 35,319 Total $ 611,528 The interest rate s on the Company’s variable interest rate notes are based on various LIBOR benchmark rates. The interest rates on the notes ranged from approximately 3.1% 3.6% December 31, 2017. $5,330 $125,833 June 2018 June 2025. The Company ’s fixed interest rate notes had interest rates that ranged from approximately 2.75% 7.61% December 31, 2017. $255 $32,840 January 2018 August 2027. 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, 2017, not

Note 9 - Financial Instruments

Note 9 - Financial Instruments and Fair Value	12 Months Ended
	Dec. 31, 2017
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, 2017, 2016. The fair value of the Company ’s long-term debt is based on secondary market indicators. Because the Company’s debt is not 2 If investments are deemed to be impaired, the Company determines whether the impairment is temporary or other than temporary. If the impairment is deemed to be temporary, the Company records an unrealized loss in other comprehensive income. If the impairment is deemed other than temporary, the Company records the impairment in the Company ’s Consolidated Statements of Income. 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 1 35 Auctions for investment grade securities held by the Company have failed. However, a failed auction does not The Company has the intent and ability to hold these auction rate securities until liquidity returns to the market. The Company does not As of December 31, 2017, 2030 $6.4 December 31, 2016, 2030 $6.2 $6.7 $150,000 2014, $275,000 2015, $450,000 2016, $325,000 second 2017. The Company valued the auction rate securities at December 31, 2017 first 2019, 225 T he Company recorded a pre-tax impairment charge of $1.0 2011 $427,000 2014 $469,000 second 2017. The table below presents disclosures about the auction rate securities measured at fair value on a recurring basis in the Company’s financial statements as follows (in thousands): At December 31, 201 7 At December 31, 201 6 Level 1 Inputs Level 2 Level 3 Level 1 Inputs Level 2 Inputs Level 3 Inputs Investment in auction rate securities $ ─ $ ─ $ 6,375 $ ─ $ ─ $ 6,231 C ost Basis Amount Gross Unrealized Loss In Accumulated OCI Fair Value December 31, 201 7 Investment in auction rate securities $ 6,375 $ - $ 6,375 December 31, 201 6 Investment in auction rate securities $ 6,700 $ 469 $ 6,231 Long-Lived Assets During the first 2016, 2016, $7.5 The fair value measurements for the Company ’s long-lived assets are based on Level 3 third 2016, four $6.1 2017, three $2.2 third 2017, one $1.4 December 31, 2017, 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 7 Loss D uring the Year Ended December 31, 2017 Loss D uring the Year Ended December 31, 2016 Long-lived assets held for sale $ 9,505 $ − $ (7,481 ) For further discussion of assets held for sale, see Note 20

Note 10 - Leasing Activities

Note 10 - Leasing Activities	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Leases of Lessee Disclosure [Text Block]	1 0. LEAS ING ACTIVITIES Vehicle Leases as Lessee The Company leases vehicles , as lessee, primarily over periods ranging from one ten December 31, 2017, $37.0 $0.9 December 31, 2017, $1.3 December 31, 2016, $2.4 December 31, 2015. 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 $71.0 Future minimum lease payments under capital and non-cancelable vehicle leases as of December 31, 2017, Capital Leases Operating Leases 2018 $ 19,819 $ 1,312 2019 20,499 1,263 2020 19,037 949 2021 13,826 502 2022 10,781 452 Thereafter 6,735 143 Total minimum lease payments $ 90,697 $ 4,621 Less amount representing interest (7,556 ) Present value of net minimum capital lease payments 83,141 Less current portion (17,119 ) Obligations under capital leases less current portion $ 66,022 Customer Vehicle Leases as Lessor T he Company, through its PacLease and Idealease franchises, leases vehicles that the Company owns or leases to customers primarily over periods of one ten December 31, 2017, $187.4 $29.0 December 31, 2016, $182.1 $27.8 December 31, 2015, $175.0 $27.4 December 31, 2017, 2018 $ 123,641 2019 104,067 2020 80,054 2021 51,334 2022 28,647 Thereafter 14,961 Total $ 402,704 As of December 31, 201 7, $584.4 $310.5 December 31, 2016, $570.1 $262.6 Other Leases - Land and Buildings The Company leases various assets under operating leases with expiration dates ranging from January 2018 June 2102. $275 $46,479 $9.5 December 31, 2017, $10.3 December 31, 2016, $11.8 December 31, 2015. December 31, 2017, 201 8 $ 8,207 201 9 5,954 2020 4,445 2021 2,618 2022 1,666 Thereafter 15,113 Total $ 38,003

Note 11 - Share Based Compensat

Note 11 - Share Based Compensation and Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	1 1. SHARE BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS Employee Stock Purchase Plan The Company ’s 2004 $10,625 six 85% first may $25,000 first May 17, 2016, 500,000 415,000 1,400,000 112,754 December 31, 2017 137,360 December 31, 2016. 6,825 1,131 December 31, 2017. Non-Employee Director Stock Option Plan On May 16, 2006, he Board of Directors and shareholders adopted the Rush Enterprises, Inc. 2006 1,500,000 May 20, 2008 may May 18, 2010 1,000,000 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% $125,000. 2016, two 6,145 four 3,687 $50,000 $125,000 2017, two 3,307 one 1,984 $50,000 one 2,315 $37,500 one 2,480 $31,250 $125,000 152,000 500,000 13,393 December 31, 2017 27,038 December 31, 2016. Employee Incentive Plans In May 2007, 2007 “2007 2007 may 2007 May 20, 2014 May 16, 2017 7,800,000 2,200,000 The aggregate number of shares of common stock subject to stock options or SARs that may one 2007 100,000 100,000 2007 ten three third 7,800,000 2,200,000 2007 December 31, 2017, 2,142,000 1,063,000 2007 During the year ended December 31, 2017, 472,463 274,390 2007 December 31, 2016, 493,088 268,890 2007 Valuation and Expense Information Stock-based compensation expense related to stock options , restricted stock awards, restricted stock units and employee stock purchases was $15.6 December 31, 2017, $12.9 December 31, 2016, $12.4 December 31, 2015. C ash received from options exercised and shares purchased under all share-based payment arrangements was $24.8 December 31, 2017, $6.5 December 31, 2016, $4.3 December 31, 2015. A summary of the Company ’s stock option activity and related information for the year ended December 31, 2017, Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Options Shares Price Life (in Years) Value Balance of Outstanding Options at January 1, 2017 3,489,826 $ 21.42 Granted 472,463 33.89 Exercised (1,205,281 ) 18.56 Forfeited (32,700 ) 27.05 Balance of Outstanding Options at December 31, 2017 2,724,308 $ 24.78 6.43 $ 70,910,167 Expected to vest a fter December 31, 2017 1,784,417 $ 26.74 7.68 $ 42,945,946 Vested and exercisable at December 31, 2017 888,246 $ 20.75 3.85 $ 26,701,699 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 29, 2017, $50.81. $25.0 December 31, 2017, $4.8 December 31, 2016, $2.6 December 31, 2015. A summary of the status of the number of shares underlying Company’s non-vested stock options as of December 31, 2017, December 31, 2017, Weighted Average Number of Grant Date Non-vested Shares Shares Fair Value Non-vested at January 1, 2017 1,881,578 $ 11.28 Granted 472,463 12.33 Vested (485,279 ) 12.92 Forfeited (32,700 ) 11.07 Non-vested at December 31, 201 7 1,836,062 $ 11.12 The total fair value of vested options was $6.3 December 31, 2017, $5.6 December 31, 2016, $5.1 December 31, 2015. $12.33 December 31, 2017, $6.54 December 31, 2016, $11.27 December 31, 2015. Stock Awards The Company granted restricted stock units to certain of its employees under the 2007 December 31, 2017. three second third T he following table presents a summary of the Company’s non-vested restricted stock units outstanding at December 31, 2017: 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, 2017 519,173 $ 21.21 Granted 274,390 31.37 Vested (253,431 ) 22.64 Forfeited − − Outstanding non-vested at December 31, 2017 540,132 8.5 $ 26,043,230 $ 25.71 Expected to vest after December 31, 201 7 538,462 8.5 $ 25,962,706 The total fair value of the shares issued upon the vesting of stock awards during the year ended December 31, 2017 $5.7 $31.37 December 31, 2017, $17.57 December 31, 2016, $24.75 December 31, 2015. As of December 31, 20 17, $13.4 2007 2.4 Defined Contribution Plan The Company has a defined contribution plan (the “Rush 401 k Plan”), which is available to all Company employees. Each employee who has completed 30 401k first may 1% 50% 15% first 10% 20% five 40% five 401k $7.0 December 31, 2017, $6.5 December 31, 2016, $6.2 December 31, 2015. Deferred Compensation Plan On November 6, 2010, pursuant to which selected employees and directors may 100% first January 1, 2011. $9.8 December 31, 2017 $7.2 December 31, 2016. $9.6 December 31, 2017 $6.8 December 31, 2016. The Company currently does not -retirement benefits nor does it provide any post-employment benefits.

Note 12 - Earnings Per Share

Note 12 - Earnings Per Share	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Earnings Per Share [Text Block]	1 2. 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 one The following is a re conciliation 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): 201 7 201 6 201 5 Numerator- Numerator for basic and diluted earnings per share − Net income available to common shareholders $ 172,129 $ 40,582 $ 66,053 Denominator- Denominator for basic earnings per share – weighted average shares 39,627 39,938 40,271 Effect of dilutive securities − Employee and director stock options and restricted share awards 1,353 665 822 Denominator for diluted earnings per share − adjusted weighted average shares outstanding and assumed conversions 40,980 40,603 41,093 Basic earnings per common share $ 4.34 $ 1.02 $ 1.64 Diluted earnings per common share and common share equivalents $ 4.20 $ 1.00 $ 1.96 Options to purchase shares of common stock that were outstanding for the years ended December 31, 2017, 2016 2015 not 201 7 201 6 201 5 A nti-dilutive options – weighted average 449 2,043 1,186

Note 13 - Income Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	1 3. INCOME TAXES Provision for Income Taxes The tax provisions are summarized as follows (in thousands): Year Ended December 31, 2017 2016 201 5 Current provision- Federal $ 22,443 $ 15,236 $ 7,513 State 4,030 2,300 2,592 26,473 17,536 10,105 Deferred provision- Federal (64,821 ) 8,260 29,561 State 2,618 71 2,084 (62,203 ) 8,331 31,645 Provision (benefit) for income taxes $ (35,730 ) $ 25,867 $ 41,750 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, 2017 20 16 2015 Income taxes at the federal statutory rate $ 47,749 $ 23,255 $ 37,733 State income taxes, net of federal benefit 3,246 1,552 3,053 Tax effect of permanent differences (4,097 ) 887 959 Revaluation of deferred taxes (82,862 ) − − Other, net 234 173 5 (B enefit) provision for income taxes $ (35,730 ) $ 25,867 $ 41,750 The components of income taxes recorded in other comprehensive income and paid in capital consisted of the following (in thousands): Year Ended December 31, 201 7 2016 201 5 Income tax expense (benefit) related to components of other comprehensive income: Change in fair value of cash flow swaps $ − $ − $ 92 Change in fair value of available-for-sale securities 183 13 7 Total $ 183 $ 13 $ 99 Paid in capital – stock based compensation $ − $ 294 $ 337 The following summarizes the components of net deferred income tax liabilities included in the balance sheet (in thousands): December 31, 201 7 201 6 Deferred income tax (assets) liabilities: Inventory $ (3,637 ) $ (5,074 ) Accounts receivable (157 ) (203 ) Capital lease obligations (19,480 ) (31,263 ) Stock options (6,899 ) (11,655 ) Accrued liabilities (2,533 ) (3,610 ) State net operating loss carry forward (2,262 ) (1,921 ) State tax credit (410 ) (380 ) Other (3,627 ) (5,170 ) Difference between book and tax basis- Depreciation and amortization 174,266 256,352 135,261 197,076 Valuation allowance 50 255 Net deferred income tax liability $ 135,311 $ 197,331 On December 22, 2017, The Tax Act includes, among other items, a reduction of the U.S. federal corporate tax rate from 35% 21% January 1, 2018. 2017 No. 118 118 not one December 31, 2017, $82.9 may At December 31, 201 7, $44.4 2017 2037. $50,000 $205,000 The Company had unrecognized income tax benefits totaling $2.6 December 31, 2017, $2.4 December 31, 2016, December 31, 2017, 2016 2015, $21,050, $34,800, $11,600 No $166,000, $145,000 $110,100 December 31, 2017, 2016 2015, The Company does not significant change in the amount of unrecognized tax benefits in the next 12 December 31, 2017, December 31, 2014 2017 December 31, 2013 2017, A reconciliation of the change in the unrecognized tax benefits is as follows (in thousands): 201 7 201 6 201 5 Unrecognized tax benefits at beginning of period $ 2,401 $ 2,332 $ 2,087 Gross increases – tax positions in current year 619 429 692 Gross increases – tax positions in a prior year − Reductions due to lapse of statute of limitations (465 ) (360 ) (447 ) Unrecognized tax benefits at end of period $ 2,555 $ 2,401 $ 2,332

Note 14 - Commitments and Conti

Note 14 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	1 4. 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 not no no not The Company has a purchase obligation of approximately $8.6 December 31, 2017 $3.8

Note 15 - Acquisitions

Note 15 - Acquisitions	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Business Combination Disclosure [Text Block]	1 5. ACQUISITIONS All of the following acquisitions, unless otherwise noted, were considered business combinations accounted for under ASC 805 not 805 no On December 14, 2017, . The transaction was valued at approximately $2.2 On May 27, 2016, . The transaction was valued at approximately $0.8

Note 16 - Accumulated Other Com

Note 16 - Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	1 6. ACCUMULATED OTHER COMPREHENSIVE INCOME The following table shows the components of accumulated other comprehensive loss (in thousands): Available for Sale Securities Balance as of December 31, 2015 $ (305 ) Changes in fair value 32 Income tax expense (13 ) Balance as of December 31, 2016 $ (286 ) Reclassification of gain into income 469 Income tax expense (183 ) Balance as of December 31, 2017 $ − The following table shows the amount of loss reclassified from accumulated other comprehensive loss into earnings (in thousands): Year Ended December 31, 201 7 December 31, 201 6 December 31, 201 5 Losses on cash flow swaps to: Interest expense $ − $ − $ (55 ) Income tax benefit − − 21 Total reclassifications $ − $ − $ (34 )

Note 17 - Unaudited Quarterly F

Note 17 - Unaudited Quarterly Financial Data	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Quarterly Financial Information [Text Block]	1 7. UNAUDITED QUARTERLY FINANCIAL DATA (In thousands, except per share amounts.) First Second Third Fourth Quarter Quarter Quarter Quarter 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 2016 Revenues $ 1,070,840 $ 1,026,462 $ 1,096,041 $ 1,021,271 Gross profit 183,270 180,478 181,316 172,948 Operating income 8,181 21,572 27,588 23,387 Income before income taxes 3,942 17,809 24,303 20,395 Net income $ 2,395 $ 10,817 $ 14,880 $ 12,490 Earnings per share: Basic $ 0.06 $ 0.27 $ 0.38 $ 0.32 Diluted $ 0.06 $ 0.27 $ 0.37 $ 0.31

Note 18 - Segments

Note 18 - Segments	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	1 8. SEGMENTS The Company currently has one ’s operation of a nationwide network of commercial vehicle dealerships that provide an integrated one not The Company also has revenues attributable to three None 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 The Company account s for intersegment sales and transfers as if the sales or transfers were to third no December 31, 2017, 2016 2015. 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, 201 7, 2016 2015 Truck All Segment Other Totals 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 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 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 196,704 261 196,965 201 5 Revenues from external customers $ 4,964,642 $ 15,091 $ 4,979,733 Interest income 490 $ – 490 Interest expense 13,814 149 13,963 Depreciation and amortization 43,355 504 43,859 Segment operating income 122,907 (1,631 ) 121,276 Segment income (loss) from continuing operations before taxes 109,583 (1,780 ) 107,803 Segment assets 2,818,255 33,753 2,852,008 Goodwill 282,481 2,560 285,041 Expenditures for segment assets 367,482 308 367,790

Note 19 - Related Party Transac

Note 19 - Related Party Transactions	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	19 . RELATED PARTY TRANSACTIONS T he Company has entered into a loan and security agreement with CCTTS, a related party. The fifth $17.0 three 4.0%. $11.9 December 31, 2017, $10.2 December 31, 2016.

Note 20 - Restructuring Costs

Note 20 - Restructuring Costs	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	2 0. RESTRUCTURING COSTS During 2016, and incurred pre-tax expenses of approximately $8.9 The restructuring costs included $3.2 9 In addition, the Company classified certain excess real estate as held for sale, which resulted in an impairment charge of $5.0 2016. During 2016, four $6.1 During 2017, three $2.2 third 2017, one $1.4 December 31, 2017, The restructuring costs and the assets held for sale are reported under the Truck Segment.

Note 21 - Subsequent Event

Note 21 - Subsequent Event	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	21 . SUBSEQUENT EVENT In the first 2018, eplacement earlier than originally anticipated at software installation. In accordance with ASC Topic 350 40, $31.9 December 31, 2017. no August 2018. seven February 2018 August 2018.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation The consolidated financial statements presented herein include the account s of Rush Enterprises, Inc. together with its consolidated subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	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
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
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	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.
Inventory, Policy [Policy Text Block]	Inventories Inventories are stated at the lower of cost or market value. Cost is determined by specific identification of new and used commercial vehicle inventory and by the first first
Property, Plant and Equipment, Policy [Policy Text Block]	P 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 $85,500 2017. 20 17 201 6 Estimated Life (Years) Land $ 129,805 $ 126,123 – Buildings and improvements 404,679 377,070 10 – 39 Leasehold improvements 26,765 26,925 2 – 39 Machinery and shop equipment 65,694 67,558 5 – 20 Furniture, fixtures and computers 63,475 73,912 3 – 15 Transportation equipment 81,158 73,156 2 – 15 Lease and rental vehicles 894,905 832,661 2 – 8 Construction in progress 8,043 11,921 Accumulated depreciation and amortization (514,929 ) (453,521 ) Total $ 1,159,595 $ 1,135,805 The Company recorded depreciation expense of $140.3 $17.6 December 31, 2017, $140.6 $17.0 December 31, 2016 $131.8 $13.1 December 31, 2015. As of December 31, 201 7, $79.8 $38.7 $107.9 December 31, 2017, $106.3 December 31, 2016 $101.1 December 31, 2015.
Goodwill and Intangible Assets, Policy [Policy Text Block]	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 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 is required to measure the goodwill impairment loss. The second not No impairment write down was required in the fourth 2017. T he following table sets forth the change in the carrying amount of goodwill for the Company for the years ended December 31, 2017 2016 Balance January 1, 2016 $ 285,041 Acquisitions and adjustments 5,150 Balance December 31, 201 6 290,191 Acquisition 1,200 Balance December 31, 201 7 $ 291,391
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	Other Assets T he total capitalized costs of the Company’s Enterprise Resource Planning software platform (“ERP Platform”) of $31.9 $20.0 15 Amortization expense relating to the ERP Platform, which is recognized in depreciation and amortization expense in the Consolidated Statements of Income, was $3.4 for the year ended December 31, 2017 , $3.4 for the year ended December 31, 2016 , and $3.3 for the year ended December 31, 2015 . See Note 21 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 December 31, 2017 December 31, 2016, no not 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 may 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. No impairment write down was required in the fourth 2017.
Income Tax, Policy [Policy Text Block]	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 not not ’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 Additionally, despite the Company ’s belief that its tax return positions are consistent with applicable tax law, management expects that certain positions may no
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition Policies Income on the sale of a vehicle is recognized when the Company and a customer execute a purchase contract, delivery has occurred and there are no may third 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. Aftermarket Products and Services revenue is earned at the time the Company sells the parts to its customers or at the time the Company completes, and the customer accepts, the service work order related to service provided to the customer’s vehicle.
Cost of Sales, Policy [Policy Text Block]	Cost of Sales For the Company ’s new and used commercial vehicle operations and its parts operations, cost of sales consists primarily of the Company’s actual purchase price, less any applicable manufacturers’ incentives, for new and used commercial vehicles and parts. For the Company’s service and body shop 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 and interest expense on the lease and rental fleet owned and leased by the Company. There are no
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 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.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock Based Compensation The Company applies the provisions of ASC topic 718 10, 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. C ompensation 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 no may not may not 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: 20 17 20 16 20 15 Expected stock volatility 33.54 % 35.63 % 40.90 % Weighted-average stock volatility 33.54 % 35.63 % 40.90 % Expected dividend yield 0.00 % 0.00 % 0.00 % Risk-free interest rate 2.17 % 1.64 % 1.74 % Expected life (years) 6.0 6.0 6.0 Weighted-average fair value of stock options granted $ 12.33 $ 6.54 $ 11.27 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 $9.5 2017, $6.8 2016 $8.8 2015.
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, $31.9 December 31, 2017, $20.0 $33.0 $16.5 December 31, 2016.
Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]	Insurance The Company is partially self-insured for a portion of the claims related to its property a nd casualty insurance programs. Accordingly, the Company is required to estimate expected losses to be incurred. The Company engages a third third not
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, including certain available for sale securities and derivatives. See Note 9 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 Level 1 the Company has the ability to access at the measurement date. Level 2 not Level 3 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.
Business Combinations Policy [Policy Text Block]	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 one
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements In March 2016, No. 2016 09, “Improvements to Employee Share-Based Payment Accounting (Topic 718 January 1, 2017. $5.3 December 31, 2017, no not 2016 09 not In February 2016, No. 2016 02, Leases (Topic 842 12 December 15, 2018, 2016 02 January 1, 2019. 2016 02, In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 2014 09 2014 09 first 2018. two 2014 09 January 1, 2018 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. The team has identified the Company’s material revenue streams to be 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. The Company does not

Note 2 - Significant Accounti31

Note 2 - Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Property, Plant and Equipment [Table Text Block]	20 17 201 6 Estimated Life (Years) Land $ 129,805 $ 126,123 – Buildings and improvements 404,679 377,070 10 – 39 Leasehold improvements 26,765 26,925 2 – 39 Machinery and shop equipment 65,694 67,558 5 – 20 Furniture, fixtures and computers 63,475 73,912 3 – 15 Transportation equipment 81,158 73,156 2 – 15 Lease and rental vehicles 894,905 832,661 2 – 8 Construction in progress 8,043 11,921 Accumulated depreciation and amortization (514,929 ) (453,521 ) Total $ 1,159,595 $ 1,135,805
Schedule of Goodwill [Table Text Block]	Balance January 1, 2016 $ 285,041 Acquisitions and adjustments 5,150 Balance December 31, 201 6 290,191 Acquisition 1,200 Balance December 31, 201 7 $ 291,391
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	20 17 20 16 20 15 Expected stock volatility 33.54 % 35.63 % 40.90 % Weighted-average stock volatility 33.54 % 35.63 % 40.90 % Expected dividend yield 0.00 % 0.00 % 0.00 % Risk-free interest rate 2.17 % 1.64 % 1.74 % Expected life (years) 6.0 6.0 6.0 Weighted-average fair value of stock options granted $ 12.33 $ 6.54 $ 11.27

Note 3 - Supplier Concentrati32

Note 3 - Supplier Concentration (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Major Suppliers and Dealership Agreements [Table Text Block]	Manufacturer Expiration Dates Peterbilt June 2018 through March 2019 International July 2018 through May 2023 Isuzu Indefinite Hino Indefinite Ford Indefinite Blue Bird August 2018 IC Bus May 2020 through December 2022

Note 4 - Accounts Receivable (T

Note 4 - Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	December 31, 201 7 2 016 Trade accounts receivable from sale of vehicles $ 104,779 $ 83,482 Trade receivables other than vehicles 57,697 42,876 Warranty claims 9,473 8,095 Other accounts receivable 12,753 22,409 Less allowance for bad debt and warranty claims (826 ) (663 ) Total $ 183,875 $ 156,199

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 201 7 201 6 New commercial vehicles $ 747,531 $ 575,879 Used commercial vehicles 76,488 71,429 Parts and accessories 205,534 187,419 Other 15,924 15,564 Less allowance (12,183 ) (9,987 ) Total $ 1,033,294 $ 840,304

Note 6 - Valuation Accounts (Ta

Note 6 - Valuation Accounts (Tables)	12 Months Ended
	Dec. 31, 2017
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 201 7 Reserve for accounts receivable $ 549 $ 625 $ (558 ) $ 616 Reserve for warranty receivable s 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 ) 5,953 201 6 Reserve for accounts receivable $ 506 $ 1,415 $ (1,372 ) $ 549 Reserve for warranty receivable s 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 2015 Reserve for accounts receivable $ 639 $ 992 $ (1,125 ) $ 506 Reserve for warranty receivable s 140 1,677 (1,712 ) 105 Reserve for parts inventory 5,067 4,215 (1,991 ) 7,291 Reserve for commercial vehicle inventory 10,644 8,417 (12,520 ) 6,541

Note 7 - Floor Plan Notes Pay36

Note 7 - Floor Plan Notes Payable and Lines of Credit (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Assets Pledged As Collateral [Table Text Block]	December 31, 2017 2016 Inventories, new and used vehicles at cost based on specific identification, net of allowance $ 818,066 $ 642,205 Vehicle sale related accounts receivable 104,778 83,482 Total $ 922,844 $ 725,687 Floor plan notes payable related to vehicles $ 778,561 $ 646,945

Note 8 - Long-term Debt (Tables

Note 8 - Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	December 31, 20 17 20 16 Variable interest rate term notes $ 96,157 $ 107,894 Fixed interest rate term notes 515,371 495,326 Total debt 611,528 603,220 Less: current maturities (145,139 ) (130,717 ) Total long-term debt, net of current maturities $ 466,389 $ 472,503
Schedule of Maturities of Long-term Debt [Table Text Block]	201 8 145,139 201 9 140,823 2020 144,163 2021 85,559 202 2 60,525 Thereafter 35,319 Total $ 611,528

Note 9 - Financial Instrument38

Note 9 - Financial Instruments and Fair Value (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	At December 31, 201 7 At December 31, 201 6 Level 1 Inputs Level 2 Level 3 Level 1 Inputs Level 2 Inputs Level 3 Inputs Investment in auction rate securities $ ─ $ ─ $ 6,375 $ ─ $ ─ $ 6,231
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	C ost Basis Amount Gross Unrealized Loss In Accumulated OCI Fair Value December 31, 201 7 Investment in auction rate securities $ 6,375 $ - $ 6,375 December 31, 201 6 Investment in auction rate securities $ 6,700 $ 469 $ 6,231
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Description Fair Value Measurements Using Significant Unobservable Inputs December 31 , 201 7 Loss D uring the Year Ended December 31, 2017 Loss D uring the Year Ended December 31, 2016 Long-lived assets held for sale $ 9,505 $ − $ (7,481 )

Note 10 - Leasing Activities (T

Note 10 - Leasing Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block]	Capital Leases Operating Leases 2018 $ 19,819 $ 1,312 2019 20,499 1,263 2020 19,037 949 2021 13,826 502 2022 10,781 452 Thereafter 6,735 143 Total minimum lease payments $ 90,697 $ 4,621 Less amount representing interest (7,556 ) Present value of net minimum capital lease payments 83,141 Less current portion (17,119 ) Obligations under capital leases less current portion $ 66,022
Schedule of Future Minimum Rental Receivable for Operating Leases [Table Text Block]	2018 $ 123,641 2019 104,067 2020 80,054 2021 51,334 2022 28,647 Thereafter 14,961 Total $ 402,704
Lessee, Operating Lease, Disclosure [Table Text Block]	201 8 $ 8,207 201 9 5,954 2020 4,445 2021 2,618 2022 1,666 Thereafter 15,113 Total $ 38,003

Note 11 - Share Based Compens40

Note 11 - Share Based Compensation and Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
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, 2017 3,489,826 $ 21.42 Granted 472,463 33.89 Exercised (1,205,281 ) 18.56 Forfeited (32,700 ) 27.05 Balance of Outstanding Options at December 31, 2017 2,724,308 $ 24.78 6.43 $ 70,910,167 Expected to vest a fter December 31, 2017 1,784,417 $ 26.74 7.68 $ 42,945,946 Vested and exercisable at December 31, 2017 888,246 $ 20.75 3.85 $ 26,701,699
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, 2017 1,881,578 $ 11.28 Granted 472,463 12.33 Vested (485,279 ) 12.92 Forfeited (32,700 ) 11.07 Non-vested at December 31, 201 7 1,836,062 $ 11.12
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, 2017 519,173 $ 21.21 Granted 274,390 31.37 Vested (253,431 ) 22.64 Forfeited − − Outstanding non-vested at December 31, 2017 540,132 8.5 $ 26,043,230 $ 25.71 Expected to vest after December 31, 201 7 538,462 8.5 $ 25,962,706

Note 12 - Earnings Per Share (T

Note 12 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	201 7 201 6 201 5 Numerator- Numerator for basic and diluted earnings per share − Net income available to common shareholders $ 172,129 $ 40,582 $ 66,053 Denominator- Denominator for basic earnings per share – weighted average shares 39,627 39,938 40,271 Effect of dilutive securities − Employee and director stock options and restricted share awards 1,353 665 822 Denominator for diluted earnings per share − adjusted weighted average shares outstanding and assumed conversions 40,980 40,603 41,093 Basic earnings per common share $ 4.34 $ 1.02 $ 1.64 Diluted earnings per common share and common share equivalents $ 4.20 $ 1.00 $ 1.96
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	201 7 201 6 201 5 A nti-dilutive options – weighted average 449 2,043 1,186

Note 13 - Income Taxes (Tables)

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year Ended December 31, 2017 2016 201 5 Current provision- Federal $ 22,443 $ 15,236 $ 7,513 State 4,030 2,300 2,592 26,473 17,536 10,105 Deferred provision- Federal (64,821 ) 8,260 29,561 State 2,618 71 2,084 (62,203 ) 8,331 31,645 Provision (benefit) for income taxes $ (35,730 ) $ 25,867 $ 41,750
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year Ended December 31, 2017 20 16 2015 Income taxes at the federal statutory rate $ 47,749 $ 23,255 $ 37,733 State income taxes, net of federal benefit 3,246 1,552 3,053 Tax effect of permanent differences (4,097 ) 887 959 Revaluation of deferred taxes (82,862 ) − − Other, net 234 173 5 (B enefit) provision for income taxes $ (35,730 ) $ 25,867 $ 41,750
Schedule of Income Taxes Related to Other Comprehensive Income [Table Text Block]	Year Ended December 31, 201 7 2016 201 5 Income tax expense (benefit) related to components of other comprehensive income: Change in fair value of cash flow swaps $ − $ − $ 92 Change in fair value of available-for-sale securities 183 13 7 Total $ 183 $ 13 $ 99 Paid in capital – stock based compensation $ − $ 294 $ 337
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 201 7 201 6 Deferred income tax (assets) liabilities: Inventory $ (3,637 ) $ (5,074 ) Accounts receivable (157 ) (203 ) Capital lease obligations (19,480 ) (31,263 ) Stock options (6,899 ) (11,655 ) Accrued liabilities (2,533 ) (3,610 ) State net operating loss carry forward (2,262 ) (1,921 ) State tax credit (410 ) (380 ) Other (3,627 ) (5,170 ) Difference between book and tax basis- Depreciation and amortization 174,266 256,352 135,261 197,076 Valuation allowance 50 255 Net deferred income tax liability $ 135,311 $ 197,331
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	201 7 201 6 201 5 Unrecognized tax benefits at beginning of period $ 2,401 $ 2,332 $ 2,087 Gross increases – tax positions in current year 619 429 692 Gross increases – tax positions in a prior year − Reductions due to lapse of statute of limitations (465 ) (360 ) (447 ) Unrecognized tax benefits at end of period $ 2,555 $ 2,401 $ 2,332

Note 16 - Accumulated Other C43

Note 16 - Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Available for Sale Securities Balance as of December 31, 2015 $ (305 ) Changes in fair value 32 Income tax expense (13 ) Balance as of December 31, 2016 $ (286 ) Reclassification of gain into income 469 Income tax expense (183 ) Balance as of December 31, 2017 $ −
Reclassifications [Member]
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Year Ended December 31, 201 7 December 31, 201 6 December 31, 201 5 Losses on cash flow swaps to: Interest expense $ − $ − $ (55 ) Income tax benefit − − 21 Total reclassifications $ − $ − $ (34 )

Note 17 - Unaudited Quarterly44

Note 17 - Unaudited Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Quarterly Financial Information [Table Text Block]	First Second Third Fourth Quarter Quarter Quarter Quarter 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 2016 Revenues $ 1,070,840 $ 1,026,462 $ 1,096,041 $ 1,021,271 Gross profit 183,270 180,478 181,316 172,948 Operating income 8,181 21,572 27,588 23,387 Income before income taxes 3,942 17,809 24,303 20,395 Net income $ 2,395 $ 10,817 $ 14,880 $ 12,490 Earnings per share: Basic $ 0.06 $ 0.27 $ 0.38 $ 0.32 Diluted $ 0.06 $ 0.27 $ 0.37 $ 0.31

Note 18 - Segments (Tables)

Note 18 - Segments (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Truck All Segment Other Totals 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 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 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 196,704 261 196,965 201 5 Revenues from external customers $ 4,964,642 $ 15,091 $ 4,979,733 Interest income 490 $ – 490 Interest expense 13,814 149 13,963 Depreciation and amortization 43,355 504 43,859 Segment operating income 122,907 (1,631 ) 121,276 Segment income (loss) from continuing operations before taxes 109,583 (1,780 ) 107,803 Segment assets 2,818,255 33,753 2,852,008 Goodwill 282,481 2,560 285,041 Expenditures for segment assets 367,482 308 367,790

Note 2 - Significant Accounti46

Note 2 - Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Depreciation		$ 140,300,000	$ 140,600,000	$ 131,800,000
Amortization		17,600,000	17,000,000	13,100,000
Capitalized Computer Software, Net	$ 31,900,000	31,900,000	33,000,000
Capitalized Computer Software, Accumulated Amortization	20,000,000	20,000,000	16,500,000
Indefinite-Lived Franchise Rights			7,000,000
Goodwill, Impairment Loss	0
Advertising Expense		9,500,000	6,800,000	8,800,000
Income Tax Expense (Benefit)		(35,730,000)	25,867,000	41,750,000
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)		(5,300,000)
Vehicles [Member]
Depreciation		107,900,000	106,300,000	101,100,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net	79,800,000	79,800,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation	38,700,000	38,700,000
Computer Software, Intangible Asset [Member]
Interest Costs Capitalized		$ 85,500
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 0
Finite-Lived Intangible Asset, Useful Life		15 years
Amortization of Intangible Assets		$ 3,400,000	$ 3,400,000	$ 3,300,000

Note 2 - Significant Accounti47

Note 2 - Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated depreciation and amortization	$ (514,929)	$ (453,521)
Total	1,159,595	1,135,805
Land [Member]
Property and equipment, gross	129,805	126,123
Building and Building Improvements [Member]
Property and equipment, gross	$ 404,679	377,070
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	$ 26,765	26,925
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	$ 65,694	67,558
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	$ 63,475	73,912
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	$ 81,158	73,156
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	$ 894,905	832,661
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	$ 8,043	$ 11,921

Note 2 - Significant Accounti48

Note 2 - Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill, balance	$ 290,191	$ 285,041
Acquisitions and adjustments		5,150
Acquisition	1,200
Goodwill, balance	$ 291,391	$ 290,191

Note 2 - Significant Accounti49

Note 2 - Significant Accounting Policies - Fair Value Assumption (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Expected stock volatility	33.54%	35.63%	40.90%
Weighted-average stock volatility	33.54%	35.63%	40.90%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	2.17%	1.64%	1.74%
Expected life (Year)	6 years	6 years	6 years
Weighted-average fair value of stock options granted (in dollars per share)	$ 12.33	$ 6.54	$ 11.27

Note 3 - Supplier Concentrati50

Note 3 - Supplier Concentration (Details Textual)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Product Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Concentration Risk, Percentage	65.20%	61.00%	59.60%

Note 4 - Accounts Receivable -

Note 4 - Accounts Receivable - Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Warranty claims	$ 9,473	$ 8,095
Other accounts receivable	12,753	22,409
Less allowance for bad debt and warranty claims	(826)	(663)
Total	183,875	156,199
Trade Accounts Receivable From Sale of Vehicles [Member]
Trade receivables	104,779	83,482
Trade Receivable Other Than Vehicles [Member]
Trade receivables	$ 57,697	$ 42,876

Note 5 - Inventories - Inventor

Note 5 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
New commercial vehicles	$ 747,531	$ 575,879
Used commercial vehicles	76,488	71,429
Parts and accessories	205,534	187,419
Other	15,924	15,564
Less allowance	(12,183)	(9,987)
Total	$ 1,033,294	$ 840,304

Note 6 - Valuation Accounts - V

Note 6 - Valuation Accounts - Valuation and Allowance Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for Trade Receivables [Member]
Balance	$ 549	$ 506	$ 639
Net Charged to Costs and Expenses	625	1,415	992
Net Write-Offs	(558)	(1,372)	(1,125)
Balance End of Year	616	549	506
Allowance for Warranty Receivables From Manufacturers [Member]
Balance	114	105	140
Net Charged to Costs and Expenses	713	833	1,677
Net Write-Offs	(617)	(824)	(1,712)
Balance End of Year	210	114	105
Parts Inventory [Member]
Balance	4,885	7,291	5,067
Net Charged to Costs and Expenses	1,414	3,400	4,215
Net Write-Offs	(69)	(5,806)	(1,991)
Balance End of Year	6,230	4,885	7,291
Commercial Vehicle Inventory [Member]
Balance	5,102	6,541	10,644
Net Charged to Costs and Expenses	5,997	9,623	8,417
Net Write-Offs	(5,146)	(11,062)	(12,520)
Balance End of Year	$ 5,953	$ 5,102	$ 6,541

Note 7 - Floor Plan Notes Pay54

Note 7 - Floor Plan Notes Payable and Lines of Credit (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Line of Credit Facility, Maximum Borrowing Capacity	$ 17,500,000
Floor Plan Notes Payable	$ 778,561,000	$ 646,945,000
Debt, Weighted Average Interest Rate	1.40%	1.60%
Long-term Line of Credit	$ 0
Line of Credit Amount Pledged to Secure Letters of Credit	11,900,000
Line of Credit Facility, Remaining Borrowing Capacity	5,600,000
BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 875,000,000
Debt Instrument, Interest Rate, Effective Percentage	2.99%
Debt Instrument, Working Capital Fee Percentage	0.16%
Floor Plan Notes Payable	$ 656,100,000
BMO Harris Bank N.A. [Member] | If Termination Occurs after January 1, 2018 and on or Prior to July 1, 2018 [Member]
Debt Instrument, Prepayment Processing Fee, Percent	1.00%
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] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.51%
Ford Motor Financing Agreement [Member]
Debt Instrument, Interest Rate, Effective Percentage	5.25%
Floor Plan Notes Payable	$ 82,000,000
Ford Motor Financing Agreement [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Debt Instrument, Variable Rate, Minimum Reference Rate	3.75%
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	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 Pay55

Note 7 - Floor Plan Notes Payable and Lines of Credit - Assets Pledged as Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Inventories, new and used vehicles at cost based on specific identification, net of allowance	$ 818,066	$ 642,205
Vehicle sale related accounts receivable	104,778	83,482
Total	922,844	725,687
Floor Plan Notes Payable	$ 778,561	$ 646,945

Note 8 - Long-term Debt (Detail

Note 8 - Long-term Debt (Details Textual)	12 Months Ended
	Dec. 31, 2017USD ($)
Minimum [Member] | Variable Interest Rate Notes [Member]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.10%
Debt Instrument, Periodic Payment	$ 5,330
Minimum [Member] | Fixed Interest Rate Notes [Member]
Debt Instrument, Periodic Payment	$ 255
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.75%
Maximum [Member] | Variable Interest Rate Notes [Member]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.60%
Debt Instrument, Periodic Payment	$ 125,833
Maximum [Member] | Fixed Interest Rate Notes [Member]
Debt Instrument, Periodic Payment	$ 32,840
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	7.61%

Note 8 - Long-term Debt - Long-

Note 8 - Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Variable interest rate term notes	$ 96,157	$ 107,894
Fixed interest rate term notes	515,371	495,326
Total	611,528	603,220
Less: current maturities	(145,139)	(130,717)
Total long-term debt, net of current maturities	$ 466,389	$ 472,503

Note 8 - Long-term Debt - Debt

Note 8 - Long-term Debt - Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
2,018	$ 145,139
2,019	140,823
2,020	144,163
2,021	85,559
2,022	60,525
Thereafter	35,319
Total	$ 611,528	$ 603,220

Note 9 - Financial Instrument59

Note 9 - Financial Instruments and Fair Value (Details Textual)	3 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2011USD ($)
Asset Impairment Charges		$ 469,000		$ 8,247,000		$ 427,000	$ 1,000,000
Impairment of Real Estate				$ 7,500,000
Number of Real Estate Properties Sold During Period			3	4
Real Estate Held-for-sale			$ 2,200,000	$ 6,100,000
Number of Real Estate Properties Put Back into Service	1
Real Estate Previously Held-for-sale Put Back Into Service	$ 1,400,000
Auction Rate Securities [Member]
Available-for-sale Securities			6,375,000	6,231,000
Available-for-sale Securities, Amortized Cost Basis			$ 6,375,000	6,700,000
Auction Rate Securities Redeemed		$ 325,000		$ 450,000	$ 275,000	$ 150,000
Derivative, Basis Spread on Variable Rate			2.25%

Note 9 - Financial Instrument60

Note 9 - Financial Instruments and Fair Value - Investment in Auction Rate Securities, Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Inputs, Level 3 [Member]
Available-for-sale Securities	$ 6,375	$ 6,231

Note 9 - Financial Instrument61

Note 9 - Financial Instruments and Fair Value - Investment in Auction Rate Securities (Details) - Auction Rate Securities [Member] - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Amortized Cost Basis	$ 6,375,000	$ 6,700,000
Gross unrealized loss in accumulated OCI		469,000
Available-for-sale Securities	$ 6,375,000	$ 6,231,000

Note 9 - Financial Instrument62

Note 9 - Financial Instruments and Fair Value - Pre-tax Effect of Interest Rate Swaps (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Long-lived assets held for sale, fair value	$ 9,505
Long-lived assets held for sale, gain (loss) included in earnings		$ (7,481)

Note 10 - Leasing Activities (D

Note 10 - Leasing Activities (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Leases, Rent Expense	$ 183,091,000	$ 182,040,000	$ 176,891,000
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	71,000,000
Land and Building [Member]
Operating Leases, Rent Expense	9,500,000	10,300,000	11,800,000
Vehicle Leases as Lessee 1 [Member]
Guaranteed Residual Value Under Capital Lease Arrangements	37,000,000
Operating Leases, Rent Expense	900,000	1,300,000	2,400,000
Vehicle Leases as Lessor [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	187,400,000	182,100,000	175,000,000
Operating Leases, Income Statement, Contingent Revenue	29,000,000	27,800,000	$ 27,400,000
Property Subject to or Available for Operating Lease, Net	584,400,000	570,100,000
Property Subject to or Available for Operating Lease, Accumulated Depreciation	310,500,000	262,600,000
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		$ 46,479
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 -

Note 10 - Leasing Activities - Future Minimum Lease Payments Under Capital and Non-cancelable Vehicle Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
2018, Capital Leases	$ 19,819
2,018	1,312
2019, Capital Leases	20,499
2,019	1,263
2020, Capital Leases	19,037
2,020	949
2021, Capital Leases	13,826
2,021	502
2022, Capital Leases	10,781
2,022	452
Thereafter, Capital Leases	6,735
Thereafter	143
Total minimum lease payments, Capital Leases	90,697
Total minimum lease payments, Operating Leases	4,621
Less amount representing interest, Capital Leases	(7,556)
Present value of net minimum capital lease payments	83,141
Less current portion	(17,119)	$ (14,449)
Obligations under capital leases less current portion	$ 66,022	$ 70,044

Note 10 - Leasing Activities 65

Note 10 - Leasing Activities - Future Minimum Rental Receivable (Details) $ in Thousands	Dec. 31, 2017USD ($)
2,018	$ 123,641
2,019	104,067
2,020	80,054
2,021	51,334
2,022	28,647
Thereafter	14,961
Total	$ 402,704

Note 10 - Leasing Activities 66

Note 10 - Leasing Activities - Future Minimum Lease Payments Under Operating Leases (Details) $ in Thousands	Dec. 31, 2017USD ($)
2,018	$ 1,312
2,019	1,263
2,020	949
2,021	502
2,022	452
Thereafter	143
Total	4,621
Land and Building [Member]
2,018	8,207
2,019	5,954
2,020	4,445
2,021	2,618
2,022	1,666
Thereafter	15,113
Total	$ 38,003

Note 11 - Share Based Compens67

Note 11 - Share Based Compensation and Employee Benefit Plans (Details Textual) - USD ($)	May 17, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 29, 2017	May 16, 2017	May 18, 2010	May 16, 2006
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		472,463
Allocated Share-based Compensation Expense		$ 15,600,000	$ 12,900,000	$ 12,400,000
Proceeds from Stock Options Exercised		24,800,000	6,500,000	4,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		25,000,000	4,800,000	2,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		$ 6,300,000	$ 5,600,000	$ 5,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 12.33	$ 6.54	$ 11.27
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 31.37	$ 17.57	$ 24.75
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 13,400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 146 days
Deferred Compensation Plan [Member]
Deferred Compensation Arrangement with Individual, Vested Percentage		100.00%
Deferred Compensation Liability, Current		$ 9,800,000	$ 7,200,000
Cash Surrender Value of Life Insurance		$ 9,600,000	6,800,000
Rush 401 Plan [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		10.00%
Defined Contribution Plan, Cost		$ 7,000,000	$ 6,500,000	$ 6,200,000
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		$ 5,700,000
Common Class A [Member]
Share Price					$ 50.81
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 Additional Shares Authorized	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		415,000
Common Stock, Capital Shares Reserved for Future Issuance		1,400,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans		112,754	137,360
Number of Employees Eligible to Participate in Stock Purchase Plan		6,825
Number of Employees Participating in Stock Purchase Plan		1,131
The 2006 Non-Employee Director Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized								1,500,000
Reduction in Number of Shares Reserved for Issuance							1,000,000
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		152,000
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		13,393	27,038
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		3,307	6,145
The 2006 Non-Employee Director Stock Option Plan [Member] | Common Class A [Member] | Shares Issued to Four Non-employee 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			3,687
Payment to Nonemployee Directors			$ 50,000
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		1,984
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]
Issuance of Stock and Cash for Non-employee Director Compensation		$ 125,000
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]
Issuance of Stock and Cash for Non-employee Director Compensation		$ 125,000
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		2,142,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						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		472,463	493,088
Amended and Restated 2007 Incentive Plan [Member] | Common Class B [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,063,000
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, 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, Options, Grants in Period, Gross		274,390	268,890
Every 6 Months [Member] | Employee Stock Purchase Plan [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount		$ 10,625

Note 11 - Share Based Compens68

Note 11 - Share Based Compensation and Employee Benefit Plans - Stock Option (Details)	12 Months Ended
	Dec. 31, 2017USD ($)$ / sharesshares
Balance (in shares) | shares	3,489,826
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 21.42
Granted (in shares) | shares	472,463
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 33.89
Exercised (in shares) | shares	(1,205,281)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 18.56
Forfeited (in shares) | shares	(32,700)
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 27.05
Balance (in shares) | shares	2,724,308
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 24.78
Balance, weighted average remaining contractual life (Year)	6 years 156 days
Aggregate intrinsic value | $	$ 70,910,167
Expected to vest (in shares) | shares	1,784,417
Expected to vest, weighted average exercise price (in dollars per share) | $ / shares	$ 26.74
Expected to vest, weighted average remaining contractual life (Year)	7 years 248 days
Expected to vest, aggregate intrinsic value | $	$ 42,945,946
Vested and exercisable (in shares) | shares	888,246
Vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 20.75
Vested and exercisable, weighted average remaining contractual life (Year)	3 years 310 days
Vested and exercisable, aggregate intrinsic value | $	$ 26,701,699

Note 11 - Share Based Compens69

Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Non-vested balance (in shares)	1,881,578
Non-vested, weighted average grant date fair value (in dollars per share)	$ 11.28
Granted (in shares)	472,463
Weighted-average fair value of stock options granted (in dollars per share)	$ 12.33	$ 6.54	$ 11.27
Vested (in shares)	(485,279)
Vested, weighted average grant date fair value (in dollars per share)	$ 12.92
Forfeited (in shares)	(32,700)
Forfeited, weighted average grant date fair value (in dollars per share)	$ 11.07
Non-vested balance (in shares)	1,836,062	1,881,578
Non-vested, weighted average grant date fair value (in dollars per share)	$ 11.12	$ 11.28

Note 11 - Share Based Compens70

Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Restricted Stock Awards and RSU's (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 31.37	$ 17.57	$ 24.75
Restricted Stock [Member]
Outstanding non-vested shares (in shares)	519,173
Outstanding non-vested, weighted average grant date fair value (in dollars per share)	$ 21.21
Granted (in shares)	274,390
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 31.37
Vested (in shares)	(253,431)
Vested, weighted average grant date fair value (in dollars per share)	$ 22.64
Outstanding non-vested shares (in shares)	540,132	519,173
Outstanding non-vested, weighted average remaining contractual life (Year)	8 years 182 days
Outstanding non-vested, aggregate intrinsic value	$ 26,043,230
Outstanding non-vested, weighted average grant date fair value (in dollars per share)	$ 25.71	$ 21.21
Expected to vest (in shares)	538,462
Expected to vest, weighted average remaining contractual life (Year)	8 years 182 days
Expected to vest, aggregate intrinsic value	$ 25,962,706

Note 12 - Earnings Per Share (D

Note 12 - Earnings Per Share (Details Textual)	12 Months Ended
	Dec. 31, 2017
Common Class A [Member]
Common Stock, Voting Rights	1/20th of one vote per share
Common Class B [Member]
Common Stock, Voting Rights	One full vote per share

Note 12 - Earnings Per Share -

Note 12 - Earnings Per Share - Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income available to common shareholders	$ 172,129	$ 40,582	$ 66,053
Denominator for basic earnings per share – weighted average shares outstanding (in shares)	39,627	39,938	40,271
Employee and director stock options and restricted share awards (in shares)	1,353	665	822
Denominator for diluted earnings per share - adjusted weighted average shares outstanding and assumed conversions (in shares)	40,980	40,603	41,093
Basic earnings per common share (in dollars per share)	$ 4.34	$ 1.02	$ 1.64
Diluted earnings per common share and common share equivalents (in dollars per share)	$ 4.20	$ 1	$ 1.96

Note 12 - Earnings Per Share 73

Note 12 - Earnings Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Anti-dilutive options – weighted average (in shares)	449	2,043	1,186

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($)	Dec. 22, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ (82,900,000)
Deferred Tax Assets, Valuation Allowance			50,000	$ 255,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate			2,600,000	2,400,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued			21,050	34,800	$ 11,600
Unrecognized Tax Benefits, Income Tax Penalties Accrued			0
Unrecognized Tax Benefits, Interest on Income Taxes Expense			166,000	$ 145,000	$ 110,100
State and Local Jurisdiction [Member]
Operating Loss Carryforwards			$ 44,400,000
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Open Tax Year			2,017
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Open Tax Year			2,013
State and Local Jurisdiction [Member] | Deferred Tax Assets Related to Operating Loss Carryforwards [Member]
Deferred Tax Assets, Valuation Allowance			$ 50,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ (205,000)
Domestic Tax Authority [Member] | Latest Tax Year [Member]
Open Tax Year			2,017
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year			2,014
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%

Note 13 - Income Taxes - Income

Note 13 - Income Taxes - Income Tax Expense (Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current provision-
Federal	$ 22,443	$ 15,236	$ 7,513
State	4,030	2,300	2,592
Total current	26,473	17,536	10,105
Deferred provision-
Federal	(64,821)	8,260	29,561
State	2,618	71	2,084
Total deferred	(62,203)	8,331	31,645
Provision (benefit) for income taxes	$ (35,730)	$ 25,867	$ 41,750

Note 13 - Income Taxes - Reconc

Note 13 - Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income taxes at the federal statutory rate	$ 47,749	$ 23,255	$ 37,733
State income taxes, net of federal benefit	3,246	1,552	3,053
Tax effect of permanent differences	(4,097)	887	959
Revaluation of deferred taxes	(82,862)
Other, net	234	173	5
Provision (benefit) for income taxes	$ (35,730)	$ 25,867	$ 41,750

Note 13 - Income Taxes - Compon

Note 13 - Income Taxes - Components of Income Taxes Related to Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income tax expense (benefit) related to components of other comprehensive income:
Change in fair value of cash flow swaps	$ 0	$ 0	$ 92
Change in fair value of available-for-sale securities	183	13	7
Total	183	13	99
Paid in capital – stock based compensation	$ 0	$ 294	$ 337

Note 13 - Income Taxes - Deferr

Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred income tax (assets) liabilities:
Inventory	$ (3,637)	$ (5,074)
Accounts receivable	(157)	(203)
Capital lease obligations	(19,480)	(31,263)
Stock options	(6,899)	(11,655)
Accrued liabilities	(2,533)	(3,610)
State net operating loss carry forward	(2,262)	(1,921)
State tax credit	(410)	(380)
Other	(3,627)	(5,170)
Difference between book and tax basis- Depreciation and amortization	174,266	256,352
Total	135,261	197,076
Deferred Tax Assets, Valuation Allowance	50	255
Net deferred income tax liability	$ 135,311	$ 197,331

Note 13 - Income Taxes - Unreco

Note 13 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrecognized tax benefits at beginning of period	$ 2,401	$ 2,332	$ 2,087
Gross increases – tax positions in current year	619	429	692
Gross increases – tax positions in a prior year
Reductions due to lapse of statute of limitations	(465)	(360)	(447)
Unrecognized tax benefits at end of period	$ 2,555	$ 2,401	$ 2,332

Note 14 - Commitments and Con80

Note 14 - Commitments and Contingencies (Details Textual) $ in Millions	Dec. 31, 2017USD ($)
Construction Contracts for Facilities [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 8.6
Information Technology Contracts [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 3.8

Note 15 - Acquisitions (Details

Note 15 - Acquisitions (Details Textual) - USD ($) $ in Millions	Dec. 14, 2017	May 27, 2016
Transwest San Diego, LLC [Member]
Business Combination, Consideration Transferred	$ 2.2
Transwest Truck Center and Ford Truck Franchise in Las Vegas [Member]
Business Combination, Consideration Transferred		$ 0.8

Note 16 - Accumulated Other C82

Note 16 - Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance	$ 862,825	$ 844,897	$ 764,339
Changes in fair value	469	32	254
Income tax expense	(183)	(13)	(99)
Balance	1,040,373	862,825	844,897
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	(286)	(305)
Changes in fair value		32
Income tax expense	(183)	(13)
Reclassification of gain into income	469
Balance	$ 0	$ (286)	$ (305)

Note 16 - Accumulated Other C83

Note 16 - Accumulated Other Comprehensive Income - Loss Reclassified From Accumulated Other Comprehensive Income (Loss) Into Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Losses on cash flow swaps to:
Interest expense			$ (55)
Income tax benefit			21
Total reclassifications			$ (34)

Note 17 - Unaudited Quarterly84

Note 17 - Unaudited Quarterly Financial Data - Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues	$ 1,208,103	$ 1,257,459	$ 1,203,523	$ 1,044,797	$ 1,021,271	$ 1,096,041	$ 1,026,462	$ 1,070,840	$ 4,713,882	$ 4,214,614	$ 4,979,733
Gross profit	212,909	220,048	209,072	187,907	172,948	181,316	180,478	183,270	829,936	718,012	784,947
Operating income	38,017	48,436	37,407	24,849	23,387	27,588	21,572	8,181	148,709	80,728	121,276
Income before income taxes	34,423	45,335	34,583	22,058	20,395	24,303	17,809	3,942	136,399	66,449	107,803
Net income	$ 105,867	$ 29,784	$ 21,999	$ 14,479	$ 12,490	$ 14,880	$ 10,817	$ 2,395	$ 172,129	$ 40,582	$ 66,053
Earnings per common share:
Basic (in dollars per share)	$ 2.65	$ 0.75	$ 0.55	$ 0.37	$ 0.32	$ 0.38	$ 0.27	$ 0.06	$ 4.34	$ 1.02	$ 1.64
Diluted (in dollars per share)	$ 2.54	$ 0.72	$ 0.54	$ 0.36	$ 0.31	$ 0.37	$ 0.27	$ 0.06	$ 4.20	$ 1	$ 1.61
Revenues	$ 1,208,103	$ 1,257,459	$ 1,203,523	$ 1,044,797	$ 1,021,271	$ 1,096,041	$ 1,026,462	$ 1,070,840	$ 4,713,882	$ 4,214,614	$ 4,979,733
Gross profit	212,909	220,048	209,072	187,907	172,948	181,316	180,478	183,270	829,936	718,012	784,947
Operating income	38,017	48,436	37,407	24,849	23,387	27,588	21,572	8,181	148,709	80,728	121,276
Income before income taxes	34,423	45,335	34,583	22,058	20,395	24,303	17,809	3,942	136,399	66,449	107,803
Net income	$ 105,867	$ 29,784	$ 21,999	$ 14,479	$ 12,490	$ 14,880	$ 10,817	$ 2,395	$ 172,129	$ 40,582	$ 66,053

Note 18 - Segments (Details Tex

Note 18 - Segments (Details Textual)	12 Months Ended
	Dec. 31, 2017
Truck Segment [Member]
Number of Reportable Segments	1
Other Segments [Member]
Number of Operating Segments	3

Note 18 - Segments - Segment Re

Note 18 - Segments - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from external customers	$ 1,208,103	$ 1,257,459	$ 1,203,523	$ 1,044,797	$ 1,021,271	$ 1,096,041	$ 1,026,462	$ 1,070,840	$ 4,713,882	$ 4,214,614	$ 4,979,733
Interest income									891	621	490
Interest expense									13,201	14,900	13,963
Depreciation and amortization									50,069	51,261	43,859
Segment operating income	38,017	48,436	37,407	24,849	23,387	27,588	21,572	8,181	148,709	80,728	121,276
Segment income (loss) from continuing operations before taxes	34,423	$ 45,335	$ 34,583	$ 22,058	20,395	$ 24,303	$ 17,809	$ 3,942	136,399	66,449	107,803
Segment assets	2,890,139				2,603,047				2,890,139	2,603,047	2,852,008
Goodwill	291,391				290,191				291,391	290,191	285,041
Expenditures for segment assets									209,917	196,965	367,790
Truck Segment [Member]
Revenues from external customers									4,698,035	4,199,348	4,964,642
Interest income									891	621	490
Interest expense									13,024	14,740	13,814
Depreciation and amortization									49,634	50,771	43,355
Segment operating income									149,338	81,483	122,907
Segment income (loss) from continuing operations before taxes									137,205	67,364	109,583
Segment assets	2,855,001				2,570,016				2,855,001	2,570,016	2,818,255
Goodwill	288,831				287,631				288,831	287,631	282,481
Expenditures for segment assets									209,852	196,704	367,482
Other Segments [Member]
Revenues from external customers									15,847	15,266	15,091
Interest income
Interest expense									177	160	149
Depreciation and amortization									435	490	504
Segment operating income									(629)	(756)	(1,631)
Segment income (loss) from continuing operations before taxes									(806)	(915)	(1,780)
Segment assets	35,138				33,031				35,138	33,031	33,753
Goodwill	$ 2,560				$ 2,560				2,560	2,560	2,560
Expenditures for segment assets									$ 65	$ 261	$ 308

Note 19 - Related Party Trans87

Note 19 - Related Party Transactions (Details Textual) - CCTTS [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Due from Related Parties	$ 11.9	$ 10.2
London Interbank Offered Rate (LIBOR) [Member]
Related Party Transaction, Rate	4.00%
Maximum [Member]
Related Party Transaction, Amounts of Transaction	$ 17

Note 20 - Restructuring Costs (

Note 20 - Restructuring Costs (Details Textual)	3 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2011USD ($)
Asset Impairment Charges		$ 469,000		$ 8,247,000		$ 427,000	$ 1,000,000
Impairment of Real Estate				$ 7,500,000
Number of Real Estate Properties Sold During Period			3	4
Real Estate Held-for-sale			$ 2,200,000	$ 6,100,000
Number of Real Estate Properties Put Back into Service	1
Real Estate Previously Held-for-sale Put Back Into Service	$ 1,400,000
Operating Segments [Member]
Restructuring and Related Cost, Incurred Cost				8,900,000
Operating Segments [Member] | Selling, General and Administrative Expenses [Member]
Asset Impairment Charges				3,200,000
Impairment of Real Estate				$ 5,000,000

Note 21 - Subsequent Event (Det

Note 21 - Subsequent Event (Details Textual) - USD ($)	1 Months Ended
	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Capitalized Computer Software, Net		$ 31,900,000	$ 33,000,000
Computer Software, Intangible Asset [Member] | Subsequent Event [Member] | Components Being Replaced [Member]
Finite-Lived Intangible Assets, Remaining Amortization Period	210 days