Pamt (PAMT) 10-K 13 Mar 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 25, 2020	Jun. 30, 2019
Document Information [Line Items]
Entity Registrant Name	PAM TRANSPORTATION SERVICES INC
Entity Central Index Key	0000798287
Trading Symbol	ptsi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		5,746,450
Entity Public Float			$ 112,575,691
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Title of 12(b) Security	Common Stock ($0.01 par value)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 318,000	$ 282,000
Accounts receivable—net:
Trade, less allowance of $2,952 and $2,224, respectively	61,784,000	63,350,000
Other	3,769,000	3,814,000
Inventories	1,327,000	1,461,000
Prepaid expenses and deposits	8,669,000	10,393,000
Marketable equity securities	29,521,000	27,549,000
Income taxes refundable	504,000	1,876,000
Total current assets	105,892,000	108,725,000
PROPERTY AND EQUIPMENT:
Land	7,246,000	5,596,000
Structures and improvements	20,204,000	19,547,000
Revenue equipment	524,527,000	457,142,000
Office furniture and equipment	11,185,000	10,040,000
Total property and equipment	563,162,000	492,325,000
Accumulated depreciation	(175,887,000)	(137,738,000)
Net property and equipment	387,275,000	354,587,000
OTHER ASSETS	4,842,000	2,754,000
TOTAL ASSETS	498,009,000	466,066,000
CURRENT LIABILITIES:
Accounts payable	16,597,000	20,002,000
Accrued expenses and other liabilities	40,610,000	23,497,000
Current maturities of long-term debt	67,637,000	63,908,000
Total current liabilities	124,845,000	107,407,000
Long-term debt—less current portion	174,187,000	157,315,000
Deferred income taxes	63,522,000	61,897,000
Other long-term liabilities	1,481,000
Total liabilities	364,034,000	326,619,000
COMMITMENTS AND CONTINGENCIES (Note 16)
STOCKHOLDERS’ EQUITY
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued
Common stock, $.01 par value, 40,000,000 shares authorized; 11,656,160 and 11,612,144 shares issued; 5,748,897 and 5,956,558 shares outstanding at December 31, 2019 and 2018, respectively	117,000	116,000
Additional paid-in capital	83,688,000	82,776,000
Accumulated other comprehensive income
Treasury stock, at cost; 5,907,263 and 5,655,586 shares at December 31, 2019 and 2018, respectively	(156,836,650)	(142,552,000)
Retained earnings	207,007,000	199,107,000
Total stockholders’ equity	133,975,000	139,447,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 498,009,000	$ 466,066,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Trade, allowance	$ 2,952	$ 2,224	$ 1,335	$ 994
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issued (in shares)	11,656,160	11,612,144
Common stock, outstanding (in shares)	5,748,897	5,956,558
Treasury stock (in shares)	5,907,263	5,655,586

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING REVENUES:
Operating revenues	$ 514,177	$ 533,261	$ 437,838
OPERATING EXPENSES AND COSTS:
Salaries, wages and benefits	129,738	119,819	102,227
Operating supplies and expenses	98,420	93,130	79,505
Rents and purchased transportation	168,399	201,455	174,477
Depreciation	55,107	49,387	42,274
Insurance and claims	35,622	17,191	17,484
Other	13,761	11,983	9,249
Loss (gain) on disposition of equipment	583	(1,306)	(58)
Total operating expenses and costs	501,630	491,659	425,158
OPERATING INCOME	12,547	41,602	12,680
NON-OPERATING INCOME (EXPENSE)	6,222	(4,016)	5,853
INTEREST EXPENSE	(8,654)	(6,245)	(3,902)
INCOME BEFORE INCOME TAXES	10,115	31,341	14,631
FEDERAL & STATE INCOME TAX EXPENSE (BENEFIT):
Current	590	141	362
Deferred	1,625	7,206	(24,630)
Total federal & state income tax expense (benefit)	2,215	7,347	(24,268)
NET INCOME	$ 7,900	$ 23,994	$ 38,899
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 1.35	$ 3.94	$ 6.14
Diluted (in dollars per share)	$ 1.34	$ 3.90	$ 6.08
AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	5,832	6,083	6,331
Diluted (in shares)	5,880	6,159	6,398
Freight Transportation Service [Member]
OPERATING REVENUES:
Operating revenues	$ 439,511	$ 445,855	$ 373,523
Fuel Surcharge [Member]
OPERATING REVENUES:
Operating revenues	$ 74,666	$ 87,406	$ 64,315

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
NET INCOME		$ 7,900	$ 23,994	$ 38,899
Other comprehensive income (loss), net of tax:
Reclassification adjustment for realized gains on marketable securities included in net income (1)	[1]			(2,059)
Reclassification adjustment for unrealized losses on marketable securities included in net income (2)	[2]			26
Changes in fair value of marketable securities (3)	[3]			2,001
COMPREHENSIVE INCOME		$ 7,900	$ 23,994	$ 38,867
[1]	Net of deferred income taxes of $0, $0, and $(1,326), respectively.
[2]	Net of deferred income taxes of $0, $0, and $16, respectively.
[3]	Net of deferred income taxes of $0, $0, and $(687), respectively.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification adjustment for realized gains on marketable securities included in net income, tax	$ 0	$ 0	$ (1,326)
Reclassification adjustment for unrealized losses on marketable securities included in net income, tax	0	0	16
Changes in fair value of marketable securities, tax	$ 0	$ 0	$ (687)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2016	6,397,000
Balance at Dec. 31, 2016		$ 115	$ 80,822	$ 7,476	$ (122,835)	$ 128,580	$ 94,158
NET INCOME						38,899	38,899
Other comprehensive income (loss), net of tax				(32)			$ (32)
Exercise of stock options-shares issued including tax benefits (in shares)	11,000						11,063
Exercise of stock options-shares issued including tax benefits			123				$ 123
Restricted stock issued (in shares)	7,000
Restricted stock issued
Treasury stock repurchases (in shares)	(254,000)
Treasury stock repurchases					(6,348)		(6,348)
Share-based compensation			614				614
Balance (in shares) at Dec. 31, 2017	6,161,000
Balance at Dec. 31, 2017		115	81,559	7,444	(129,183)	167,669	127,604
Cumulative effect adjustment – ASU 2016-09						190	190
NET INCOME						23,994	$ 23,994
Exercise of stock options-shares issued including tax benefits (in shares)	45,000						45,005
Exercise of stock options-shares issued including tax benefits		1	485				$ 486
Restricted stock issued (in shares)	38,000
Restricted stock issued
Treasury stock repurchases (in shares)	(287,000)
Treasury stock repurchases					(13,369)		(13,369)
Share-based compensation			732				732
Cumulative effect adjustment – ASU 2016-01				(7,444)		7,444
Balance (in shares) at Dec. 31, 2018	5,957,000
Balance at Dec. 31, 2018		116	82,776	0	(142,552)	199,107	139,447
NET INCOME						7,900	$ 7,900
Exercise of stock options-shares issued including tax benefits (in shares)
Restricted stock issued (in shares)	44,000
Restricted stock issued		1					$ 1
Treasury stock repurchases (in shares)	(252,000)
Treasury stock repurchases					(14,285)		(14,285)
Share-based compensation			912				912
Balance (in shares) at Dec. 31, 2019	5,749,000
Balance at Dec. 31, 2019		$ 117	$ 83,688	$ 0	$ (156,837)	$ 207,007	$ 133,975

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parentheticals) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Other comprehensive income (loss), tax	$ 1,995

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES:
Net income	$ 7,900,000	$ 23,994,000	$ 38,899,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	55,107,000	49,387,000	42,274,000
Bad debt expense	728,000	889,000	341,000
Stock compensation—net of excess tax benefits	912,000	732,000	614,000
Provision for (benefit from) deferred income taxes	1,625,000	7,206,000	(24,630,000)
Reclassification of other than temporary impairment in marketable equity securities			42,000
Recognized (gain) loss on marketable equity securities	(4,753,000)	5,388,000	(4,735,000)
(Loss) gain on sale or disposal of equipment	583,000	(1,306,000)	(58,000)
Changes in operating assets and liabilities:
Accounts receivable	884,000	(5,970,000)	(1,298,000)
Prepaid expenses, deposits, inventories, and other assets	1,865,000	(137,000)	(1,095,000)
Income taxes refundable	1,372,000	(76,000)	(155,000)
Trade accounts payable	(2,233,000)	1,731,000	682,000
Accrued expenses and other liabilities	20,307,000	509,000	(266,000)
Net cash provided by operating activities	84,297,000	82,347,000	50,614,000
INVESTING ACTIVITIES:
Purchases of property and equipment	(79,354,000)	(73,882,000)	(67,674,000)
Proceeds from disposition of equipment	14,263,000	24,904,000	18,766,000
Sales of marketable equity securities	2,984,000	1,045,000	6,833,000
Purchases of marketable equity securities, net of return of capital	(203,000)	(7,318,000)	(3,211,000)
Net cash used in investing activities	(62,310,000)	(55,251,000)	(45,286,000)
FINANCING ACTIVITIES:
Borrowings under line of credit	590,902,000	615,612,000	483,297,000
Repayments under line of credit	(584,047,000)	(605,419,000)	(485,163,000)
Borrowings of long-term debt	60,203,000	52,717,000	55,415,000
Repayments of long-term debt	(70,917,000)	(82,442,000)	(48,110,000)
Borrowings under margin account	527,000	7,584,000	3,412,000
Repayments under margin account	(4,334,000)	(2,206,000)	(7,867,000)
Repurchases of common stock	(14,285,000)	(13,369,000)	(6,348,000)
Proceeds from exercise of stock options	0	485,000	123,000
Net cash used in financing activities	(21,951,000)	(27,038,000)	(5,241,000)
NET INCREASE IN CASH AND CASH EQUIVALENTS	36,000	58,000	87,000
CASH AND CASH EQUIVALENTS—Beginning of year	282,000	224,000	137,000
CASH AND CASH EQUIVALENTS—End of year	318,000	282,000	224,000
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION—
Interest	8,612,000	6,095,000	3,905,000
Income taxes	671,000	217,000	518,000
NONCASH INVESTING AND FINANCING ACTIVITIES—
Purchases of revenue equipment included in accounts payable	$ 366,000	$ 1,597,000	$ 2,973,000

Note 1 - Accounting Policies

Note 1 - Accounting Policies	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. ACCOUNTING POLICIES Description of Business and Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly owned operating subsidiaries: P.A.M. Transport, Inc., P.A.M. Cartage Carriers, LLC, Overdrive Leasing, LLC, Choctaw Express, LLC, Decker Transport Co., LLC, T.T.X., LLC, Transcend Logistics, Inc., and East Coast Transport and Logistics, LLC. The following subsidiaries were inactive during all periods presented: P.A.M. International, Inc., P.A.M. Logistics Services, Inc., Choctaw Brokerage, Inc., S & L Logistics, Inc. and P.A.M. Mexico Holdings, LLC. Use of Estimates Cash and Cash Equivalents three may Accounts Receivable and Allowance for Doubtful Accounts not may Bank Overdrafts not not zero not December 31, 2019 2018 $2,572,000 $3,669,000, Accounts Receivable Other December 31, 2019 2018, $211,000 $220,000, December 31, 2019 2018, $1,381,000 $1,724,000, Marketable Equity Securities 321, 321” 321 Prior to the adoption of ASU 2016 01 January 1, 2018, For additional information with respect to marketable equity securities, see Note 4 Impairment of Long-Lived Assets may not not not No 2019 2018. Property and Equipment Asset Class Estimated Asset Life (in years) Service vehicles 3 - 5 Office furniture and equipment 3 - 7 Revenue equipment 3 - 8 Structures and improvements 5 - 40 The Company’s management periodically evaluates whether changes to estimated useful lives and/or salvage values are necessary to ensure its estimates accurately reflect the economic use of the assets. During 2019 2018, not Inventory first first Prepaid Tires 24 Advertising Expense $1,269,000, $1,234,000 $1,087,000 December 31, 2019, 2018 2017, Repairs and Maintenance Self - Insurance Liability not Income Taxes not not The application of income tax law to multi-jurisdictional operations such as those performed by the Company is inherently complex. Laws and regulations in this area are voluminous and often ambiguous. As such, we may may We recognize the impact of tax positions in our financial statements. These tax positions must meet a more-likely-than- not not first no not first no In determining whether a tax asset valuation allowance is necessary, management, in accordance with the provisions of ASC 740 10 30, December 31, 2019 2018, not Revenue Recognition no Earnings Per Share 14 Fair Value Measurements 18 Reporting Segments 82.7%, 80.0% 86.3% twelve December 31, 2019, 2018 2017, Concentrations of Credit Risk not Subsequent Events February 24, 2020, December 9, 2013, December 31, 2019, December 31, 2019 $16.5 not not Foreign Currency Transactions Recent Accounting Pronouncements– July 2018, No. 2018 09, 2018 09” 2018 09 2018 09 December 15, 2018, January 1, 2019 not In July 2018, No. 2018 10, 2018 10” 842, 2018 10 842, 2018 10 December 15, 2018, January 1, 2019 not In June 2016, No. 2016 13, 2016 13” 326 2016 13 2016 13 December 15, 2019, not In February 2016, No. 2016 02, 842 may December 15, 2018, To satisfy the standard’s objective, a lessee will recognize a right-of-use asset representing its right to use the underlying asset for the lease term and a lease liability for the obligation to make lease payments. Both the right-of-use asset and lease liability will initially be measured at the present value of the lease payments, with subsequent measurement dependent on the classification of the lease as either a finance or an operating lease. For leases with a term of 12 not The adoption of this guidance on January 1, 2019 not 17 842. In January 2016, 2016 01, 2016 01” 825 10 The provisions of ASU 2016 01 • Categorize securities as equity securities or debt securities • Eliminate the classification of equity securities as trading or available for sale • Determine which securities have readily determinable fair values • Use the exit price notion when measuring the fair value of financial instruments for disclosure purposes • Consider the need for a valuation allowance related to a deferred tax asset on available-for-sale securities in combination with the Company’s other deferred tax assets, and • Recognize changes in the fair market value of equity securities in net income ASU 2016 01 December 15, 2017. not January 1, 2018, not $7.4 December 31, 2017

Note 2 - Revenue Recognition

Note 2 - Revenue Recognition	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	2. REVENUE RECOGNITION The Company has a single performance obligation, to transport our customer’s freight from a specified origin to a specified destination. The Company has the discretion to choose to self-transport or to arrange for alternate transportation to fulfill the performance obligation. Where the Company decides to self-transport the freight, the Company classifies the service as truckload services, and where the Company arranges for alternate transportation of the freight, the Company classifies the service as brokerage and logistics services. In either case, the Company is paid a rate to transport freight from its origin location to a specified destination. Because the primary factors influencing revenue recognition, including performance obligation, customer base, and timing of revenue recognition are the same for both of its service categories, the Company utilizes the same revenue recognition method throughout its operations. Company revenue is generated from freight transportation services performed utilizing heavy truck trailer combinations. While various ownership arrangements may third not In fulfilling the Company’s obligation to transport freight from a specified origin to a specified destination, control of freight is transferred to us at the point it has been loaded into the driver’s trailer, the doors are sealed and the driver has signed a bill of lading, which is the basic transportation agreement that establishes the nature, quantity and condition of the freight loaded, responsibility for invoice payment, and pickup and delivery locations. Our revenue is generated, and our customer receives benefit, as the freight progresses towards delivery locations. In the event our customer cancels the shipment at some point prior to the final delivery location and re-consigns the shipment to an alternate delivery location, we are entitled to receive payment for services performed for the partial shipment. Shipments are generally conducted over a relatively short time span, generally one three one Freight Revenue – revenue generated by the performance of the freight transportation service, including any accessorial service, provided to customers. Fuel Surcharge Revenue – revenue designed to adjust freight revenue rates to an agreed upon base cost for diesel fuel. Diesel fuel prices can fluctuate widely during the term of a contract with a customer. At the point that freight revenue rates are negotiated with customers, a sliding scale is agreed upon that approximately adjusts diesel fuel costs to an agreed upon base amount. In general, as fuel prices increase, revenue from fuel surcharge increases, so that diesel fuel cost is adjusted to the approximate base amount agreed upon. Revenue is recognized over time as the freight progresses towards its destination and the transportation service obligation is fulfilled. For loads picked up during the reporting period, but delivered in a subsequent reporting period, revenue is allocated to each period based on the transit time in each period as a percentage of total transit time. There are no

Note 3 - Trade Accounts Receiva

Note 3 - Trade Accounts Receivable	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Financing Receivables [Text Block]	3. TRADE ACCOUNTS RECEIVABLE The Company's receivables result primarily from the sale of transportation and logistics services. The Company performs ongoing credit evaluations of its customers and generally does not December 31, 2019 2018: 20 1 9 20 1 8 ( i n thousands) Billed $ 57,495 $ 56,766 Unbilled 7,241 8,808 Allowance for doubtful accounts (2,952 ) (2,224 ) Total accounts receivable—net $ 61,784 $ 63,350 An analysis of changes in the allowance for doubtful accounts for the years ended December 31, 2019, 2018, 2017 20 1 9 20 1 8 20 1 7 ( i n thousands) Balance—beginning of year $ 2,224 $ 1,335 $ 994 Provision for bad debts 728 889 341 Charge-offs - - - Recoveries - - - Balance—end of year $ 2,952 $ 2,224 $ 1,335

Note 4 - Marketable Equity Secu

Note 4 - Marketable Equity Securities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	4. MARKETABLE EQUITY SECURITIES The Company accounts for its marketable securities in accordance with ASC Topic 321, 321 Marketable equity securities are carried at fair value, with changes in fair market value included in the determination of net income. The fair market value of marketable equity securities is determined based on quoted market prices in active markets. See Note 18 The following table sets forth cost, market value and unrealized gain on equity securities classified as available-for-sale as of December 31, 2019 2018. 201 9 201 8 (in thousands) Available-for-sale securities: Fair market value $ 29,521 $ 27,549 Cost 24,156 25,602 Unrealized gain $ 5,365 $ 1,947 The following table sets forth the gross unrealized gains and losses on the Company’s marketable securities as of December 31, 2019 2018. 201 9 201 8 (in thousands) Available-for-sale securities: Gross unrealized gains $ 7,808 $ 5,668 Gross unrealized losses 2,443 3,721 Net unrealized gains $ 5,365 $ 1,947 For the years ended December 31, 2019, 2018 2017, $1,309,000, $1,171,000, $999,000 The following table shows the Company’s net realized gains during 2019, 2018 2017 201 9 201 8 201 7 (in thousands) Realized gains: Sale proceeds $ 2,984 $ 1,044 $ 6,833 Cost of securities sold 1,929 669 2,098 Realized gains $ 1,055 $ 375 $ 4,735 Realized gains, net of taxes $ 815 $ 278 $ 2,938 At December 31, 2019, $8,587,000 $2,443,000, December 31, 2018, $12,399,000 $3,721,000, The market value of the Company’s equity securities are periodically used as collateral against any outstanding margin account borrowings. As of December 31, 2019 2018, $7,474,000 $11,281,000 2.40% 3.11% December 31, 2019 2018,

Note 5 - Accrued Expenses and O

Note 5 - Accrued Expenses and Other Liabilities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	5. ACCRUED EXPENSES AND OTHER LIABILITIES Accrued expenses and other liabilities at December 31 20 1 9 20 1 8 ( i n thousands) Payroll $ 2,226 $ 2,955 Accrued vacation 2,191 1,987 Taxes—other than income 2,719 2,319 Interest 284 249 Driver escrows 2,211 2,722 Margin account borrowings 7,474 11,281 Self-insurance claims 2,988 1,984 Legal reserves 19,901 - Current portion of Right-of-Use asset 616 - Total accrued expenses and other liabilities $ 40,610 $ 23,497

Note 6 - Claims Liabilities

Note 6 - Claims Liabilities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block]	6. CLAIMS LIABILITIES The Company maintains cargo insurance coverage to protect it from certain business risks. This policy has a per occurrence deductible of $10,000. On September 1, 2019, $1.0 September 1, 2019, $1.0 Beginning September 1, 2018, October 1, 2013, October 1, 2013 September 30, 2015, $2,500 October 1, 2015, The Company maintains workers’ compensation coverage in Arkansas, Ohio, Oklahoma, Mississippi, and Florida with a $500,000 $500,000 not not $430,000 $300,000 $350,000 not 5

Note 7 - Long-term Debt

Note 7 - Long-term Debt	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Long-term Debt [Text Block]	7. LONG-TERM DEBT Long-term debt at December 31, 201 9 201 8 (in thousands) Line of credit with a bank—due July 1, 2022, and collateralized by accounts receivable (1) 17,047 10,192 Equipment financing (2) 224,777 211,031 Total long-term debt 241,824 221,223 Less current maturities (67,637 ) (63,908 ) Long-term debt—net of current maturities $ 174,187 $ 157,315 ( 1 Line of credit agreement with a bank provides for maximum borrowings of $60.0 first 1.25% 2.96% December 31, 2019 0.25% $18.0 4.00:1. 2019. December 31, 2019, $17.4 $0.4 $42.6 December 31, 2018, $10.9 $0.7 ( 2 Equipment financings consist of installment obligations for revenue equipment purchases, payable in various monthly installments with various maturity dates through September 2026, 3.65% December 31, 2019 The Company has provided letters of credit to third $430,000 $700,000 December 31, 2019 December 31, 2018, third Scheduled annual maturities on long-term debt outstanding at December 31, 2019, 2020 $ 67,637 2021 41,629 2022 55,460 2023 47,211 2024 26,157 2025 2,955 2026 775 Total $ 241,824

Note 8 - Noncash Investing and

Note 8 - Noncash Investing and Financing Activities	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Noncash Investing and Financing Activities Disclosure [Text Block]	8. NONCASH INVESTING AND FINANCING ACTIVITIES The Company financed approximately $24.5 $68.1 2019 2018,

Note 9 - Capital Stock

Note 9 - Capital Stock	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	9. CAPITAL STOCK The Company's authorized capital stock consists of 40,000,000 $.01 10,000,000 $.01 December 31, 2019, 11,656,160 5,748,897 December 31, 2018, 11,612,144 5,956,558 No December 31, 2019 2018. Common Stock The holders of our common stock, subject to such rights as may one no Preferred Stock Preferred stock may may December 31, 2019, no Treasury Stock In May 2019, 200,000 “2019 2% 118,996 2019 May 13, 2019 June 11, 2019. $55.00 $60.00 192,743 $60.00 $11.6 June 13, 2019. December 31, 2019. In May 2018, 100,000 “2018 2% 124,248 2018 May 8, 2018 June 7, 2018. $39.00 $43.00 185,597 $40.00 $7.5 June 12, 2018. December 31, 2018. The Company’s stock repurchase program has been extended and expanded several times, most recently in April 2017, 500,000 September 2011 58,934 101,754 2019 2018, The Company accounts for Treasury stock using the cost method, and as of December 31, 2019, 5,907,263 $156,836,650.

Note 10 - Segment Information,

Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Segment Reporting and Concentration Risk Disclosure [Text Block]	10. SEGMENT INFORMATION, SIGNIFICANT CUSTOMERS, INDUSTRY CONCENTRATION AND GEOGRAPHIC AREAS The Company's revenues for 2019, 2018 2017 The table below presents revenue dollars and percentages by geographic area: Year Ended December 31, 2019 2018 2017 (in thousands) Amount Percent Amount Percent Amount Percent United States - domestic shipments $ 326,559 63.5 $ 302,754 56.8 $ 255,197 58.3 Shipments to or from Mexico 186,391 36.3 229,350 43.0 181,099 41.4 Shipments to or from Canada 1,226 0.2 1,157 0.2 1,542 0.3 Total Operating Revenues $ 514,177 100 % $ 533,261 100 % $ 437,838 100 % Our five 40%, 42% 41% 2019, 2018 2017, 19%, 13% 18% 2019, 2018 2017, 9%, 16% 10% 2019, 2018 2017, 7%, 8% 9% 2019, 2018 2017, We also provide transportation services to other manufacturers who are suppliers for automobile manufacturers. Approximately 40%, 46% 46% 2019, 2018 2017, Accounts receivable from the three $31,327,000 $30,848,000 December 31, 2019 2018,

Note 11 - Dividends

Note 11 - Dividends	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Dividend Payment Restrictions [Text Block]	11. DIVIDENDS The Company has paid cash dividends in the past; however, the Company currently intends to retain future earnings and does not

Note 12 - Federal and State Inc

Note 12 - Federal and State Income Taxes	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12. FEDERAL AND STATE INCOME TAXES Under GAAP, deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and for income tax reporting purposes. Significant components of the Company’s deferred tax liabilities and assets at December 31 201 9 201 8 (in thousands) Deferred tax liabilities: Property and equipment $ 83,453 $ 78,502 Unrealized gains on securities 2,580 2,580 Prepaid expenses and other 2,193 2,667 Total deferred tax liabilities 88,226 83,749 Deferred tax assets: Allowance for doubtful accounts 760 572 QAFMV tax credit carryforward 864 864 New hire tax credit 124 124 Compensated absences 512 460 Self-insurance allowances 5,630 188 Marketable equity securities 1,253 2,200 Net operating loss carryover 15,364 17,241 Other 198 203 Total deferred tax assets 24,705 21,852 Net deferred tax liability $ 63,521 $ 61,897 The reconciliation between the effective income tax rate and the statutory Federal income tax rate for the years ended December 31, 2019, 2018 2017 201 9 201 8 201 7 (in thousands) Amount Percent Amount Percent Amount Percent Income tax at the statutory federal rate $ 2,124 21.0 $ 6,582 21.0 $ 4,975 34.0 Impact of the Tax Cuts and Jobs Act (1) - - - - (29,255 ) (199.9 ) Nondeductible expenses 342 3.4 80 0.2 72 0.5 State income taxes/other—net of federal benefit (251 ) (2.5 ) 685 2.2 (60 ) (0.5 ) Total income tax expense (benefit) $ 2,215 21.9 $ 7,347 23.4 $ (24,268 ) (165.9 ) ( 1 December 22, 2017, 35% 21% January 1, 2018 2018 2021. $29.3 fourth 2017 The provision (benefit) for income taxes consisted of the following: 201 9 201 8 201 7 (in thousands) Current: Federal $ (56 ) $ (48 ) $ (79 ) State 646 189 441 Total current income tax provision 590 141 362 Deferred: Federal 2,177 6,185 (24,622 ) State (552 ) 1,021 (8 ) Total deferred income tax provision (benefit) 1,625 7,206 (24,630 ) Total income tax provision (benefit) expense $ 2,215 $ 7,347 $ (24,268 ) At December 31, 2019, $607,000 50% $988,000 December 31, 2018, 2030. $66,805,000 $30,835,000 2030 not In determining whether a tax asset valuation allowance is necessary, management, in accordance with the provisions of ASC 740 10 30, December 31, 2019 2018, not The Company recognizes a tax benefit from an uncertain tax position only if it is more likely than not December 31, 2019, not 2019 2018, not The Company and its subsidiaries are subject to U.S. and Canadian federal income tax laws as well as the income tax laws of multiple state jurisdictions. The major tax jurisdictions in which the Company operates generally provide for a deficiency assessment statute of limitation period of three 2016

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Compensation and Employee Benefit Plans [Text Block]	13. STOCK-BASED COMPENSATION The Company maintains a stock incentive plan under which incentive and nonqualified stock options and other stock awards may March 13, 2014, May 29, 2014 2014 2006 750,000 2014 not 85% In April 2019, 1,845 $48.94 In May 2019, 213 $47.06 In December 2018, 33,000 $36.35 one fourth four In March 2018, 1,932 $36.35 In April 2017, 100,000 $16.38, one third three In March 2017, 4,298 $16.29 During 2019 2018, no no December 31, 2019 December 31, 2018. December 31, 2019, 407,000 The grant date fair value of stock and stock options vested during 2019, 2018 2017 $953,000, $719,000 $256,000, $912,000 2019 $100,000 205 nine 213 one second 2019. $200,000 2019. $ 0.12 2019. December 31, 2019, $924,000 $399,000 2020, $263,000 2021, $262,000 2022. Total pre-tax stock-based compensation expense, recognized in Salaries, wages and benefits was approximately $732,000 2018 $70,000 276 first 2018. $172,000 2018. $0.09 $0.10, 2018. Total pre-tax stock-based compensation expense, recognized in Salaries, wages and benefits was approximately $614,000 2017 $70,000 614 first 2017. $231,000 2017. $0.26 2017. Transactions in stock options under these plans are summarized as follows: Shares Under Option Weighted- Average Exercise Price Outstanding—January 1, 2017: 56,131 $ 10.85 Granted - - Exercised (11,063 ) 11.13 Canceled - - Outstanding—December 31, 2017: 45,068 $ 10.79 Granted - - Exercised (45,005 ) 10.79 Canceled (63 ) 11.22 Outstanding—December 31, 2018: - $ - Granted - - Exercised - - Canceled - - Outstanding—December 31, 2019: - $ - Options exercisable—December 31, 2019: - $ - There were no 2019, 2018, 2017. no 2017. 2018 $6.34. The total intrinsic value of options exercised during the years ended December 31, 2018 2017, $1,406,000 $82,000, A summary of the status of the Company’s non-vested restricted stock as of December 31, 2019 December 31, 2019, Restricted Stock Number of Shares Weighted- Average Grant Date Fair Value Nonvested at January 1, 2019 100,917 $ 23.09 Granted 2,058 48.75 Canceled/forfeited/expired (3,500 ) 36.35 Vested (44,016 ) 21.65 Nonvested at December 31, 2019 55,459 $ 24.35 Cash received from option exercises totaled approximately $0, $485,000 $123,000 December 31, 2019, 2018 2017,

Note 14 - Earnings Per Share

Note 14 - Earnings Per Share	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	14. EARNINGS PER SHARE Basic earnings per common share was computed by dividing net income by the weighted average number of shares outstanding during the period. Diluted earnings per common share was calculated as follows: For the Year Ended December 31, 201 9 201 8 201 7 (in thousands, except per share data) Net income $ 7,900 $ 23,994 $ 38,899 Basic weighted average common shares outstanding 5,832 6,083 6,331 Dilutive effect of common stock equivalents 48 76 67 Diluted weighted average common shares outstanding 5,880 6,159 6,398 Basic earnings per share $ 1.35 $ 3.94 $ 6.14 Diluted earnings per share $ 1.34 $ 3.90 $ 6.08

Note 15 - Benefit Plan

Note 15 - Benefit Plan	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	15. BENEFIT PLAN The Company sponsors a benefit plan for the benefit of all eligible employees. The plan qualifies under Section 401 50% 3% 20% five $198,000, $176,000 $179,000 2019, 2018 2017,

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16. COMMITMENTS AND CONTINGENCIES Other than the lawsuits discussed below, the Company is not We are a defendant in a collective- and class-action lawsuit which was filed on December 9, 2016, December 9, 2013, December 31, 2019, February 18, 2020, $16.5 December 31, 2019, $16.5 not We are a defendant in a collective- and class-action lawsuit which was filed on May 29, 2019, May 29, 2016 not We are involved in certain other claims and pending litigation arising from the ordinary conduct of business. We also provide accruals for claims within our self-insured retention amounts. On September 1, 2019, $1.0 $1.0 not not During 2014 2015, 471 not 56 January 31, 2018. Total rental expense, net of amounts reimbursed, for the years ended December 31, 2019, 2018 2017 $0, $47,000, $5,460,000,

Note 17 - Leases

Note 17 - Leases	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Lessor, Operating Leases [Text Block]	17. LEASES Right-of-Use Leases During 2019, five not 842, $ 2.1 December 31, 2019. not five not not December 31, 2019. Scheduled amounts and timing of cash flows arising from operating lease payments at December 31, 2019, (in thousands) Maturity of Lease Liabilities 2020 $ 616 2021 627 2022 544 2023 340 2024 114 Thereafter 0 Total undiscounted operating lease payments $ 2,241 Less: Imputed interest (143 ) Present value of operating lease liabilities $ 2,098 Balance Sheet Classification Right-of-use assets (recorded in other non-current assets) $ 2,098 Current lease liabilities (recorded in other current liabilities) $ 616 Long-term lease liabilities (recorded in other long-term liabilities) 1,482 Total operating lease liabilities $ 2,098 Other Information Weighted-average remaining lease term for operating leases (in years) 3.74 Weighted-average discount rate for operating leases 3.59 % Cash Flows Right-of-use assets of $2.4 December 31, 2019. $0.3 December 31, 2019 Cash Paid for Operating Leases Twelve Months Ended December 3 1 , 2019 2018 (in thousands) Right-of-Use leases $ 255 $ - Short-term leases (1) 2,214 2,174 Total $ 2,469 $ 2,174 ( 1 twelve Lease Revenue The Company has a lease-purchase program whereby we offer independent contractors the opportunity to lease a Company-owned truck. The terms associated with these leases require weekly lease payments over the term of the leases which range from 7 60 December 31, 2019 $60,130,000 $33,757,000, Leases in our lease-purchase program expire at various dates through 2024. December 31, 2019 2018 $18,792,000 $22,319,000, not December 31, 2019, $6.7 The Company leases office and shop facilities to a related party at our Laredo, Texas terminal. At December 31, 2019, $1,697,000 $1,080,000, December 31, 2019 $12,000. 19 The Company's operating lease revenue is disclosed in the table below. Twelve Months E nded December 3 1 , 2019 2018 (in thousands) Leased truck revenue (recorded in revenue, before fuel surcharge) $ 9,220 $ 8,101 Leased dock space revenue (recorded in non-operating income) 155 155 Total lease revenue $ 9,375 $ 8,256 Lease Receivable Future minimum operating lease payments receivable at December 31, 2019: (in thousands) 2020 $ 7,811 2021 3,847 2022 3,404 2023 2,728 2024 1,002 Thereafter - Total future minimum lease payments receivable $ 18,792 Lease Payments to Related Parties Payments to related parties of $813,756 2019 one eleven ASC Topic 840 The ASC Topic 840 842 840. The Company has a lease-purchase program whereby we offer independent contractors the opportunity to lease a Company-owned truck. The cost and carrying amount of the Company-owned trucks in this program at December 31, 2018 $61,061,000 $34,299,000, Future minimum operating lease payments receivable as of December 31, 2018: (in thousands) 2019 $ 9,649 2020 6,497 2021 2,417 2022 2,025 2023 1,731 Thereafter - Total future minimum lease payments $ 22,319 The Company leases office and shop facilities to a related party. At December 31, 2018, $1,697,000 $1,138,000, December 31, 2018 $12,000. During 2018 one one not $284,000 December 31, 2018.

Note 18 - Fair Value of Financi

Note 18 - Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Fair Value Disclosures [Text Block]	18. FAIR VALUE OF FINANCIAL INSTRUMENTS The Company’s financial instruments consist of cash and cash equivalents, marketable equity securities, accounts receivable, trade accounts payable, and borrowings. The Company follows the guidance for financial assets and liabilities measured on a recurring basis. The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date and also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three may Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Inputs other than Level 1 not not Level 3: Unobservable inputs that are supported by little or no The Company utilizes the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. At December 31, 2019 2018, 2019 2018 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Marketable equity securities $ 29,521 $ 29,521 - - $ 27,549 $ 27,549 - - During 2019 2018, no The Company’s investments in marketable equity securities are recorded at fair value based on quoted market prices. The carrying value of cash and cash equivalents, accounts receivable, trade accounts payable, and accrued liabilities approximate fair value due to their short maturities. The carrying amount for the line of credit approximates fair value because the line of credit interest rate is adjusted frequently. For long-term debt other than the lines of credit, the fair values are estimated using discounted cash flow analyses, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. The carrying values and estimated fair values of this other long-term debt at December 31, 2019 2018 201 9 201 8 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value (in thousands) Long-term debt $ 224,777 $ 228,449 $ 211,031 $ 210,234 The Company has not

Note 19 - Related Party Transac

Note 19 - Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	19. RELATED PARTY TRANSACTIONS In the normal course of business, transactions for transportation and repair services, equipment, property leases and other services are conducted between the Company and companies affiliated with our Chairman and controlling stockholder. The Company recognized approximately $2,691,000, $2,854,000 $585,000 $9,190,000, $9,859,000 $7,497,000 2019, 2018, 2017, The Company purchased physical damage, auto liability, general liability, and workers’ compensation insurance through an unaffiliated insurance broker which was written by an insurance company affiliated with our Chairman and controlling stockholder. The premiums for physical damage coverage were approximately $0, $1,271,000 $1,808,000 2019, 2018, 2017, 2019, 2018, 2017 $10,345,000, $10,987,000, $10,860,000, 2019, 2018, 2017 $0, $24,000 $35,000, 2019, 2018, 2017 $266,000, $301,000 $286,000, Amounts owed to the Company by these affiliates were approximately $1,052,000 $149,000 December 31, 2019 2018, December 31, 2019 2018, $1,052,000 $147,000 $0 $2,000 third December 31, 2019 2018 $0 $29,000, December 31, 2019 2018 $961,000 $2,161,000 An insurance company affiliated with our Chairman and controlling stockholder has specific knowledge, experience and expertise related to self-insured claims development and assists the Company in establishing fully developed reserve estimates related to certain auto liability claims in excess of $1.0

Note 20 - Quarterly Results of

Note 20 - Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Quarterly Financial Information [Text Block]	20. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) The tables below present quarterly financial information for 2019 2018: 2019 Three Months Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Operating revenues $ 128,686 $ 133,000 $ 128,994 $ 123,497 Operating expenses and costs 118,999 119,789 121,461 141,381 Operating income (loss) 9,687 13,211 7,533 (17,884 ) Non-operating income (loss) 3,472 (197 ) 490 2,457 Interest expense (2,040 ) (2,059 ) (2,178 ) (2,377 ) Income tax (expense) benefit (2,818 ) (2,301 ) (1,264 ) 4,168 Net income (loss) $ 8,301 $ 8,654 $ 4,581 $ (13,636 ) Net income (loss) per common share: Basic $ 1.40 $ 1.47 $ 0.80 $ (2.37 ) Diluted $ 1.39 $ 1.45 $ 0.79 $ (2.37 ) Average common shares outstanding: Basic 5,921 5,901 5,756 5,751 Diluted 5,985 5,949 5,799 5,751 201 8 Three Months Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Operating revenues $ 119,458 $ 135,302 $ 140,325 $ 138,176 Operating expenses and costs 115,702 125,285 127,172 123,500 Operating income 3,756 10,017 13,153 14,676 Non-operating (loss) income (879 ) 632 935 (4,704 ) Interest expense (1,160 ) (1,355 ) (1,711 ) (2,019 ) Income tax expense (330 ) (2,005 ) (3,129 ) (1,883 ) Net income $ 1,387 $ 7,289 $ 9,248 $ 6,070 Net income per common share: Basic $ 0.22 $ 1.18 $ 1.53 $ 1.02 Diluted $ 0.22 $ 1.17 $ 1.52 $ 1.01 Average common shares outstanding: Basic 6,168 6,159 6,034 5,975 Diluted 6,264 6,229 6,088 6,029

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Description of Business and Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly owned operating subsidiaries: P.A.M. Transport, Inc., P.A.M. Cartage Carriers, LLC, Overdrive Leasing, LLC, Choctaw Express, LLC, Decker Transport Co., LLC, T.T.X., LLC, Transcend Logistics, Inc., and East Coast Transport and Logistics, LLC. The following subsidiaries were inactive during all periods presented: P.A.M. International, Inc., P.A.M. Logistics Services, Inc., Choctaw Brokerage, Inc., S & L Logistics, Inc. and P.A.M. Mexico Holdings, LLC.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents three may
Receivable [Policy Text Block]	Accounts Receivable and Allowance for Doubtful Accounts not may
Bank Overdrafts [Policy Text Block]	Bank Overdrafts not not zero not December 31, 2019 2018 $2,572,000 $3,669,000,
Accounts Receivable [Policy Text Block]	Accounts Receivable Other December 31, 2019 2018, $211,000 $220,000, December 31, 2019 2018, $1,381,000 $1,724,000,
Marketable Securities, Policy [Policy Text Block]	Marketable Equity Securities 321, 321” 321 Prior to the adoption of ASU 2016 01 January 1, 2018, For additional information with respect to marketable equity securities, see Note 4
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets may not not not No 2019 2018.
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment Asset Class Estimated Asset Life (in years) Service vehicles 3 - 5 Office furniture and equipment 3 - 7 Revenue equipment 3 - 8 Structures and improvements 5 - 40 The Company’s management periodically evaluates whether changes to estimated useful lives and/or salvage values are necessary to ensure its estimates accurately reflect the economic use of the assets. During 2019 2018, not
Inventory Supplies, Policy [Policy Text Block]	Inventory first first
Prepaid Tires [Policy Text Block]	Prepaid Tires 24
Advertising Cost [Policy Text Block]	Advertising Expense $1,269,000, $1,234,000 $1,087,000 December 31, 2019, 2018 2017,
Maintenance Cost, Policy [Policy Text Block]	Repairs and Maintenance
Self Insurance Liability [Policy Text Block]	Self - Insurance Liability not
Income Tax, Policy [Policy Text Block]	Income Taxes not not The application of income tax law to multi-jurisdictional operations such as those performed by the Company is inherently complex. Laws and regulations in this area are voluminous and often ambiguous. As such, we may may We recognize the impact of tax positions in our financial statements. These tax positions must meet a more-likely-than- not not first no not first no In determining whether a tax asset valuation allowance is necessary, management, in accordance with the provisions of ASC 740 10 30, December 31, 2019 2018, not
Revenue [Policy Text Block]	Revenue Recognition no
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share 14
Fair Value Measurement, Policy [Policy Text Block]	Fair Value Measurements 18
Segment Reporting, Policy [Policy Text Block]	Reporting Segments 82.7%, 80.0% 86.3% twelve December 31, 2019, 2018 2017,
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of Credit Risk not
Subsequent Events, Policy [Policy Text Block]	Subsequent Events February 24, 2020, December 9, 2013, December 31, 2019, December 31, 2019 $16.5 not not
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Transactions
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements– July 2018, No. 2018 09, 2018 09” 2018 09 2018 09 December 15, 2018, January 1, 2019 not In July 2018, No. 2018 10, 2018 10” 842, 2018 10 842, 2018 10 December 15, 2018, January 1, 2019 not In June 2016, No. 2016 13, 2016 13” 326 2016 13 2016 13 December 15, 2019, not In February 2016, No. 2016 02, 842 may December 15, 2018, To satisfy the standard’s objective, a lessee will recognize a right-of-use asset representing its right to use the underlying asset for the lease term and a lease liability for the obligation to make lease payments. Both the right-of-use asset and lease liability will initially be measured at the present value of the lease payments, with subsequent measurement dependent on the classification of the lease as either a finance or an operating lease. For leases with a term of 12 not The adoption of this guidance on January 1, 2019 not 17 842. In January 2016, 2016 01, 2016 01” 825 10 The provisions of ASU 2016 01 • Categorize securities as equity securities or debt securities • Eliminate the classification of equity securities as trading or available for sale • Determine which securities have readily determinable fair values • Use the exit price notion when measuring the fair value of financial instruments for disclosure purposes • Consider the need for a valuation allowance related to a deferred tax asset on available-for-sale securities in combination with the Company’s other deferred tax assets, and • Recognize changes in the fair market value of equity securities in net income ASU 2016 01 December 15, 2017. not January 1, 2018, not $7.4 December 31, 2017

Note 1 - Accounting Policies (T

Note 1 - Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Property, Plant and Equipment [Table Text Block]	Asset Class Estimated Asset Life (in years) Service vehicles 3 - 5 Office furniture and equipment 3 - 7 Revenue equipment 3 - 8 Structures and improvements 5 - 40

Note 3 - Trade Accounts Recei_2

Note 3 - Trade Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	20 1 9 20 1 8 ( i n thousands) Billed $ 57,495 $ 56,766 Unbilled 7,241 8,808 Allowance for doubtful accounts (2,952 ) (2,224 ) Total accounts receivable—net $ 61,784 $ 63,350
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]	20 1 9 20 1 8 20 1 7 ( i n thousands) Balance—beginning of year $ 2,224 $ 1,335 $ 994 Provision for bad debts 728 889 341 Charge-offs - - - Recoveries - - - Balance—end of year $ 2,952 $ 2,224 $ 1,335

Note 4 - Marketable Equity Se_2

Note 4 - Marketable Equity Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Marketable Securities [Table Text Block]	201 9 201 8 (in thousands) Available-for-sale securities: Fair market value $ 29,521 $ 27,549 Cost 24,156 25,602 Unrealized gain $ 5,365 $ 1,947
Unrealized Gain (Loss) on Investments [Table Text Block]	201 9 201 8 (in thousands) Available-for-sale securities: Gross unrealized gains $ 7,808 $ 5,668 Gross unrealized losses 2,443 3,721 Net unrealized gains $ 5,365 $ 1,947
Schedule of Realized Gain (Loss) [Table Text Block]	201 9 201 8 201 7 (in thousands) Realized gains: Sale proceeds $ 2,984 $ 1,044 $ 6,833 Cost of securities sold 1,929 669 2,098 Realized gains $ 1,055 $ 375 $ 4,735 Realized gains, net of taxes $ 815 $ 278 $ 2,938

Note 5 - Accrued Expenses and_2

Note 5 - Accrued Expenses and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	20 1 9 20 1 8 ( i n thousands) Payroll $ 2,226 $ 2,955 Accrued vacation 2,191 1,987 Taxes—other than income 2,719 2,319 Interest 284 249 Driver escrows 2,211 2,722 Margin account borrowings 7,474 11,281 Self-insurance claims 2,988 1,984 Legal reserves 19,901 - Current portion of Right-of-Use asset 616 - Total accrued expenses and other liabilities $ 40,610 $ 23,497

Note 7 - Long-term Debt (Tables

Note 7 - Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	201 9 201 8 (in thousands) Line of credit with a bank—due July 1, 2022, and collateralized by accounts receivable (1) 17,047 10,192 Equipment financing (2) 224,777 211,031 Total long-term debt 241,824 221,223 Less current maturities (67,637 ) (63,908 ) Long-term debt—net of current maturities $ 174,187 $ 157,315
Schedule of Maturities of Long-term Debt [Table Text Block]	2020 $ 67,637 2021 41,629 2022 55,460 2023 47,211 2024 26,157 2025 2,955 2026 775 Total $ 241,824

Note 10 - Segment Information_2

Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Year Ended December 31, 2019 2018 2017 (in thousands) Amount Percent Amount Percent Amount Percent United States - domestic shipments $ 326,559 63.5 $ 302,754 56.8 $ 255,197 58.3 Shipments to or from Mexico 186,391 36.3 229,350 43.0 181,099 41.4 Shipments to or from Canada 1,226 0.2 1,157 0.2 1,542 0.3 Total Operating Revenues $ 514,177 100 % $ 533,261 100 % $ 437,838 100 %

Note 12 - Federal and State I_2

Note 12 - Federal and State Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	201 9 201 8 (in thousands) Deferred tax liabilities: Property and equipment $ 83,453 $ 78,502 Unrealized gains on securities 2,580 2,580 Prepaid expenses and other 2,193 2,667 Total deferred tax liabilities 88,226 83,749 Deferred tax assets: Allowance for doubtful accounts 760 572 QAFMV tax credit carryforward 864 864 New hire tax credit 124 124 Compensated absences 512 460 Self-insurance allowances 5,630 188 Marketable equity securities 1,253 2,200 Net operating loss carryover 15,364 17,241 Other 198 203 Total deferred tax assets 24,705 21,852 Net deferred tax liability $ 63,521 $ 61,897
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	201 9 201 8 201 7 (in thousands) Amount Percent Amount Percent Amount Percent Income tax at the statutory federal rate $ 2,124 21.0 $ 6,582 21.0 $ 4,975 34.0 Impact of the Tax Cuts and Jobs Act (1) - - - - (29,255 ) (199.9 ) Nondeductible expenses 342 3.4 80 0.2 72 0.5 State income taxes/other—net of federal benefit (251 ) (2.5 ) 685 2.2 (60 ) (0.5 ) Total income tax expense (benefit) $ 2,215 21.9 $ 7,347 23.4 $ (24,268 ) (165.9 )
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	201 9 201 8 201 7 (in thousands) Current: Federal $ (56 ) $ (48 ) $ (79 ) State 646 189 441 Total current income tax provision 590 141 362 Deferred: Federal 2,177 6,185 (24,622 ) State (552 ) 1,021 (8 ) Total deferred income tax provision (benefit) 1,625 7,206 (24,630 ) Total income tax provision (benefit) expense $ 2,215 $ 7,347 $ (24,268 )

Note 13 - Stock-based Compens_2

Note 13 - Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Shares Under Option Weighted- Average Exercise Price Outstanding—January 1, 2017: 56,131 $ 10.85 Granted - - Exercised (11,063 ) 11.13 Canceled - - Outstanding—December 31, 2017: 45,068 $ 10.79 Granted - - Exercised (45,005 ) 10.79 Canceled (63 ) 11.22 Outstanding—December 31, 2018: - $ - Granted - - Exercised - - Canceled - - Outstanding—December 31, 2019: - $ - Options exercisable—December 31, 2019: - $ -
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Restricted Stock Number of Shares Weighted- Average Grant Date Fair Value Nonvested at January 1, 2019 100,917 $ 23.09 Granted 2,058 48.75 Canceled/forfeited/expired (3,500 ) 36.35 Vested (44,016 ) 21.65 Nonvested at December 31, 2019 55,459 $ 24.35

Note 14 - Earnings Per Share (T

Note 14 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	For the Year Ended December 31, 201 9 201 8 201 7 (in thousands, except per share data) Net income $ 7,900 $ 23,994 $ 38,899 Basic weighted average common shares outstanding 5,832 6,083 6,331 Dilutive effect of common stock equivalents 48 76 67 Diluted weighted average common shares outstanding 5,880 6,159 6,398 Basic earnings per share $ 1.35 $ 3.94 $ 6.14 Diluted earnings per share $ 1.34 $ 3.90 $ 6.08

Note 17 - Leases (Tables)

Note 17 - Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	(in thousands) Maturity of Lease Liabilities 2020 $ 616 2021 627 2022 544 2023 340 2024 114 Thereafter 0 Total undiscounted operating lease payments $ 2,241 Less: Imputed interest (143 ) Present value of operating lease liabilities $ 2,098 Balance Sheet Classification Right-of-use assets (recorded in other non-current assets) $ 2,098 Current lease liabilities (recorded in other current liabilities) $ 616 Long-term lease liabilities (recorded in other long-term liabilities) 1,482 Total operating lease liabilities $ 2,098 Other Information Weighted-average remaining lease term for operating leases (in years) 3.74 Weighted-average discount rate for operating leases 3.59 %
Lease, Cost [Table Text Block]	Twelve Months Ended December 3 1 , 2019 2018 (in thousands) Right-of-Use leases $ 255 $ - Short-term leases (1) 2,214 2,174 Total $ 2,469 $ 2,174
Operating Lease, Lease Income [Table Text Block]	Twelve Months E nded December 3 1 , 2019 2018 (in thousands) Leased truck revenue (recorded in revenue, before fuel surcharge) $ 9,220 $ 8,101 Leased dock space revenue (recorded in non-operating income) 155 155 Total lease revenue $ 9,375 $ 8,256
Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block]	(in thousands) 2020 $ 7,811 2021 3,847 2022 3,404 2023 2,728 2024 1,002 Thereafter - Total future minimum lease payments receivable $ 18,792
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	(in thousands) 2019 $ 9,649 2020 6,497 2021 2,417 2022 2,025 2023 1,731 Thereafter - Total future minimum lease payments $ 22,319

Note 18 - Fair Value of Finan_2

Note 18 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	2019 2018 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Marketable equity securities $ 29,521 $ 29,521 - - $ 27,549 $ 27,549 - -
Fair Value, by Balance Sheet Grouping [Table Text Block]	201 9 201 8 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value (in thousands) Long-term debt $ 224,777 $ 228,449 $ 211,031 $ 210,234

Note 20 - Quarterly Results o_2

Note 20 - Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Quarterly Financial Information [Table Text Block]	2019 Three Months Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Operating revenues $ 128,686 $ 133,000 $ 128,994 $ 123,497 Operating expenses and costs 118,999 119,789 121,461 141,381 Operating income (loss) 9,687 13,211 7,533 (17,884 ) Non-operating income (loss) 3,472 (197 ) 490 2,457 Interest expense (2,040 ) (2,059 ) (2,178 ) (2,377 ) Income tax (expense) benefit (2,818 ) (2,301 ) (1,264 ) 4,168 Net income (loss) $ 8,301 $ 8,654 $ 4,581 $ (13,636 ) Net income (loss) per common share: Basic $ 1.40 $ 1.47 $ 0.80 $ (2.37 ) Diluted $ 1.39 $ 1.45 $ 0.79 $ (2.37 ) Average common shares outstanding: Basic 5,921 5,901 5,756 5,751 Diluted 5,985 5,949 5,799 5,751 201 8 Three Months Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Operating revenues $ 119,458 $ 135,302 $ 140,325 $ 138,176 Operating expenses and costs 115,702 125,285 127,172 123,500 Operating income 3,756 10,017 13,153 14,676 Non-operating (loss) income (879 ) 632 935 (4,704 ) Interest expense (1,160 ) (1,355 ) (1,711 ) (2,019 ) Income tax expense (330 ) (2,005 ) (3,129 ) (1,883 ) Net income $ 1,387 $ 7,289 $ 9,248 $ 6,070 Net income per common share: Basic $ 0.22 $ 1.18 $ 1.53 $ 1.02 Diluted $ 0.22 $ 1.17 $ 1.52 $ 1.01 Average common shares outstanding: Basic 6,168 6,159 6,034 5,975 Diluted 6,264 6,229 6,088 6,029

Note 1 - Accounting Policies (D

Note 1 - Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Bank Overdrafts	$ 2,572,000	$ 3,669,000
Due from Employees, Current	211,000	220,000
Other Receivables, Net, Current, Total	3,769,000	3,814,000
Impairment of Long-Lived Assets Held-for-use		$ 0
Period for Amortizing Prepaid Tires		2 years
Advertising Expense	1,269,000	$ 1,234,000	$ 1,087,000
AOCI Attributable to Parent [Member]
Reclassification of Gain (Loss) Unrealized on Equity Securities from AOCI to Retained Earnings		(7,444,000)
Accounting Standards Update 2016-01 [Member] | AOCI Attributable to Parent [Member]
Reclassification of Gain (Loss) Unrealized on Equity Securities from AOCI to Retained Earnings		$ (7,400,000)
Settlement Of Collective And Class Action Lawsuit [Member]
Loss Contingency Accrual, Ending Balance	$ 16,500,000
Truckload Services [Member] | Sales [Member] | Product Concentration Risk [Member]
Concentration Risk, Percentage	82.70%	80.00%	86.30%
Independent Contractors [Member]
Other Receivables, Net, Current, Total	$ 1,381,000	$ 1,724,000

Note 1 - Accounting Policies -

Note 1 - Accounting Policies - Useful Lives of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Vehicles [Member] | Minimum [Member]
Property and equipment (Year)	3 years
Vehicles [Member] | Maximum [Member]
Property and equipment (Year)	5 years
Furniture and Fixtures [Member] | Minimum [Member]
Property and equipment (Year)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property and equipment (Year)	7 years
Machinery and Equipment [Member] | Minimum [Member]
Property and equipment (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property and equipment (Year)	8 years
Building and Building Improvements [Member] | Minimum [Member]
Property and equipment (Year)	5 years
Building and Building Improvements [Member] | Maximum [Member]
Property and equipment (Year)	40 years

Note 3 - Trade Accounts Recei_3

Note 3 - Trade Accounts Receivable - Accounts Receivable Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Billed	$ 57,495	$ 56,766
Unbilled	7,241	8,808
Allowance for doubtful accounts	(2,952)	(2,224)	$ (1,335)	$ (994)
Total accounts receivable—net	$ 61,784	$ 63,350

Note 3 - Trade Accounts Recei_4

Note 3 - Trade Accounts Receivable - Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance—beginning of year	$ 2,224	$ 1,335	$ 994
Provision for bad debts	728	889	341
Charge-offs
Recoveries
Balance—end of year	$ 2,952	$ 2,224	$ 1,335

Note 4 - Marketable Equity Se_3

Note 4 - Marketable Equity Securities (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment Income, Dividend	$ 1,309,000	$ 1,171,000	$ 999,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	8,587,000	12,399,000
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax	2,443,000	3,721,000
Margin Account Borrowings [Member] | Accrued Expenses and Other Liabilities [Member]
Short-term Debt, Total	$ 7,474,000	$ 11,281,000
Debt, Weighted Average Interest Rate	2.40%	3.11%

Note 4 - Marketable Equity Se_4

Note 4 - Marketable Equity Securities - Securities Classified As Available-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair market value	$ 29,521	$ 27,549
Cost	24,156	25,602
Unrealized gain	$ 5,365	$ 1,947

Note 4 - Marketable Equity Se_5

Note 4 - Marketable Equity Securities - Unrealized Gains and Losses on Marketable Equity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Gross unrealized gains	$ 7,808	$ 5,668
Gross unrealized losses	2,443	3,721
Net unrealized gains	$ 5,365	$ 1,947

Note 4 - Marketable Equity Se_6

Note 4 - Marketable Equity Securities - Realized Gains on Marketable Equity Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sale proceeds	$ 2,984	$ 1,044	$ 6,833
Cost of securities sold	1,929	669	2,098
Realized gains	1,055	375	4,735
Realized gains, net of taxes	$ 815	$ 278	$ 2,938

Note 5 - Accrued Expenses and_3

Note 5 - Accrued Expenses and Other Liabilities - Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payroll	$ 2,226	$ 2,955
Accrued vacation	2,191	1,987
Taxes—other than income	2,719	2,319
Interest	284	249
Driver escrows	2,211	2,722
Margin account borrowings	7,474	11,281
Self-insurance claims	2,988	1,984
Legal reserves	19,901
Total accrued expenses and other liabilities	40,610	23,497
Accrued Expenses and Other Liabilities [Member]
Current lease liabilities (recorded in other current liabilities)	$ 616

Note 6 - Claims Liabilities (De

Note 6 - Claims Liabilities (Details Textual) - USD ($)	Dec. 31, 2019	Sep. 01, 2019	Dec. 31, 2018
Self Insurance Auto Liability Claims Threshold Amount		$ 1,000,000
Workers Compensation Self Insured Retention	$ 500,000
Workers Compensation Per Occurrence Excess Policy	500,000
Letters of Credit Outstanding, Amount	430,000		$ 700,000
Stop Loss for Self Insurance for Employee Health Claims Per Covered Employee Per Year	350,000
Cargo Loss Coverage [Member]
Per Occurrence Deductibles	10,000
Auto Liability Coverage [Member]
Per Occurrence Deductibles	2,500
Self Insurance Auto Liability Claims Threshold Amount	1,000,000	$ 1,000,000
Workers Compensation Coverage [Member]
Letters of Credit Outstanding, Amount	430,000
Certificates of Deposit, at Carrying Value	$ 300,000

Note 7 - Long-term Debt (Detail

Note 7 - Long-term Debt (Details Textual)	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Letters of Credit Outstanding, Amount	$ 430,000	$ 700,000
Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 60,000,000
Line of Credit Facility, Interest Rate at Period End	2.96%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Average Daily Borrowings Amount Unused Fee Trigger	$ 18,000,000
Ratio of Indebtedness to Net Capital		4
Line of Credit Facility, Outstanding Advances	17,400,000	$ 10,900,000
Letters of Credit Outstanding, Amount	400,000	$ 700,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 42,600,000
Line of Credit [Member] | Equipment Financing [Member]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.65%
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.25%

Note 7 - Long-term Debt - Summa

Note 7 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Long-term debt		$ 241,824	$ 221,223
Less current maturities		(67,637)	(63,908)
Long-term debt—net of current maturities		174,187	157,315
Line of Credit [Member]
Long-term debt	[1]	17,047	10,192
Secured Debt [Member]
Long-term debt	[2]	$ 224,777	$ 211,031
[1]	Line of credit agreement with a bank provides for maximum borrowings of $60.0 million and contains certain restrictive covenants that must be maintained by the Company on a consolidated basis. Borrowings on the line of credit are at an interest rate of LIBOR as of the first day of the month plus 1.25% (2.96% at December 31, 2019) and are secured by our trade accounts receivable. An “unused fee” of 0.25% is charged if average daily borrowings are less than $18.0 million in a given month. Monthly payments of interest are required under this agreement. Also, under the terms of the agreement the Company must maintain a debt to EBITDA (earnings before interest, taxes, depreciation, and amortization) ratio of less than 4.00:1. The Company was in compliance with all provisions under this agreement throughout 2019. At December 31, 2019, outstanding advances on the line were approximately $17.4 million, including letters of credit totaling $0.4 million, with availability to borrow $42.6 million. At December 31, 2018, outstanding advances on the line were approximately $10.9 million, including letters of credit totaling $0.7 million.
[2]	Equipment financings consist of installment obligations for revenue equipment purchases, payable in various monthly installments with various maturity dates through September 2026, at a weighted average interest rate of 3.65% as of December 31, 2019 and collateralized by revenue equipment.

Note 7 - Long-term Debt - Annua

Note 7 - Long-term Debt - Annual Maturities on Long-term Debt Outstanding (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
2020	$ 67,637
2021	41,629
2022	55,460
2023	47,211
2024	26,157
2025	2,955
2026	775
Total	$ 241,824	$ 221,223

Note 8 - Noncash Investing an_2

Note 8 - Noncash Investing and Financing Activities (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	$ 24.5	$ 68.1

Note 9 - Capital Stock (Details

Note 9 - Capital Stock (Details Textual) - USD ($)	Jun. 13, 2019	May 13, 2019	Jun. 08, 2018	May 08, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Apr. 30, 2017
Common Stock, Shares Authorized					40,000,000	40,000,000
Common Stock, Par or Stated Value Per Share					$ 0.01	$ 0.01
Preferred Stock, Shares Authorized					10,000,000	10,000,000
Preferred Stock, Par or Stated Value Per Share					$ 0.01	$ 0.01
Common Stock, Shares, Issued, Total					11,656,160	11,612,144
Common Stock, Shares, Outstanding, Ending Balance					5,748,897	5,956,558
Preferred Stock, Shares Issued, Total					0	0
Treasury Stock, Value, Acquired, Cost Method					$ 14,285,000	$ 13,369,000	$ 6,348,000
Treasury Stock, Shares, Ending Balance					5,907,263	5,655,586
Treasury Stock, Value, Ending Balance					$ 156,836,650	$ 142,552,000
The 2019 Tender Offer [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		200,000
Stock Repurchase Program Additional Shares Authroized To Be Repurchased Percent Of Outstanding Shares Percent		2.00%
Stock Repurchase Program Additional Shares Authorized To Be Repurchased Percent Of Outstanding Shares, Shares		118,996
Treasury Stock, Shares, Acquired	192,743
Treasury Stock Acquired, Average Cost Per Share	$ 60
Treasury Stock, Value, Acquired, Cost Method	$ 11,600,000
The 2019 Tender Offer [Member] | Minimum [Member]
Treasury Stock Acquired Cost Per Share		$ 55
The 2019 Tender Offer [Member] | Maximum [Member]
Treasury Stock Acquired Cost Per Share		$ 60
The 2018 Tender Offer [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased				100,000
Stock Repurchase Program Additional Shares Authroized To Be Repurchased Percent Of Outstanding Shares Percent				2.00%
Stock Repurchase Program Additional Shares Authorized To Be Repurchased Percent Of Outstanding Shares, Shares				124,248
Treasury Stock, Shares, Acquired			185,597
Treasury Stock Acquired, Average Cost Per Share			$ 40
Treasury Stock, Value, Acquired, Cost Method			$ 7,500,000
The 2018 Tender Offer [Member] | Minimum [Member]
Treasury Stock Acquired Cost Per Share				$ 39
The 2018 Tender Offer [Member] | Maximum [Member]
Treasury Stock Acquired Cost Per Share				$ 43
September 2011 Reauthorization [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased								500,000
Treasury Stock, Shares, Acquired					58,934	101,754

Note 10 - Segment Information_3

Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas (Details Textual) - Customer Concentration Risk [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales [Member] | Five Largest Customers [Member]
Concentration Risk, Percentage	40.00%	42.00%	41.00%
Sales [Member] | General Motors Company [Member]
Concentration Risk, Percentage	19.00%	13.00%	18.00%
Sales [Member] | Fiat Chrysler Automobiles [Member]
Concentration Risk, Percentage	9.00%	16.00%	10.00%
Sales [Member] | Ford Motor Company [Member]
Concentration Risk, Percentage	7.00%	8.00%	9.00%
Revenue Provided to the Automobile Manufacturing Industry [Member]
Concentration Risk, Percentage	40.00%	46.00%	46.00%
Accounts Receivable [Member]
Accounts Receivable, before Allowance for Credit Loss, Current	$ 31,327,000	$ 30,848,000

Note 10 - Segment Information_4

Note 10 - Segment Information, Significant Customers, Industry Concentration, and Geographic Areas - Revenue Dollars and Percentages by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating revenues	$ 123,497	$ 128,994	$ 133,000	$ 128,686	$ 138,176	$ 140,325	$ 135,302	$ 119,458	$ 514,177	$ 533,261	$ 437,838
Motor Carrier [Member]
Operating revenues									$ 514,177	$ 533,261	$ 437,838
Motor Carrier [Member] | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Operating Revenues, percentage									100.00%	100.00%	100.00%
Motor Carrier [Member] | UNITED STATES
Operating revenues									$ 326,559	$ 302,754	$ 255,197
Motor Carrier [Member] | UNITED STATES | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Operating Revenues, percentage									63.50%	56.80%	58.30%
Motor Carrier [Member] | MEXICO
Operating revenues									$ 186,391	$ 229,350	$ 181,099
Motor Carrier [Member] | MEXICO | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Operating Revenues, percentage									36.30%	43.00%	41.40%
Motor Carrier [Member] | CANADA
Operating revenues									$ 1,226	$ 1,157	$ 1,542
Motor Carrier [Member] | CANADA | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Operating Revenues, percentage									0.20%	0.20%	0.30%

Note 12 - Federal and State I_3

Note 12 - Federal and State Income Taxes (Details Textual) - USD ($)	Dec. 21, 2017	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%		21.00%	21.00%	34.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 29,300,000
Income Taxes Receivable			$ 607,000
Deferred Tax Assets, Tax Credit Carryforwards, General Business				$ 988,000
Operating Loss Carryforwards, Total			66,805,000
Operating Loss Carryforwards, To Expire			30,835,000
Income Tax Examination, Penalties and Interest Expense, Total			$ 0	$ 0
Statute of Limitations			3 years

Note 12 - Federal and State I_4

Note 12 - Federal and State Income Taxes - Significant Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax liabilities:
Property and equipment	$ 83,453	$ 78,502
Unrealized gains on securities	2,580	2,580
Prepaid expenses and other	2,193	2,667
Total deferred tax liabilities	88,226	83,749
Deferred tax assets:
Allowance for doubtful accounts	760	572
QAFMV tax credit carryforward	864	864
New hire tax credit	124	124
Compensated absences	512	460
Self-insurance allowances	5,630	188
Marketable equity securities	1,253	2,200
Net operating loss carryover	15,364	17,241
Other	198	203
Total deferred tax assets	24,705	21,852
Net deferred tax liability	$ 63,521	$ 61,897

Note 12 - Federal and State I_5

Note 12 - Federal and State Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands		Dec. 21, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income tax at the statutory federal rate, amount											$ 2,124	$ 6,582	$ 4,975
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%									21.00%	21.00%	34.00%
Impact of the Tax Cuts and Jobs Act, amount	[1]												$ (29,255)
Impact of the Tax Cuts and Jobs Act, percent	[1]												(199.90%)
Nondeductible expenses, amount											$ 342	$ 80	$ 72
Nondeductible expenses, percent											3.40%	0.20%	0.50%
State income taxes/other—net of federal benefit, amount											$ (251)	$ 685	$ (60)
State income taxes/other—net of federal benefit, percent											(2.50%)	2.20%	(0.50%)
Total income tax provision (benefit) expense			$ (4,168)	$ 1,264	$ 2,301	$ 2,818	$ 1,883	$ 3,129	$ 2,005	$ 330	$ 2,215	$ 7,347	$ (24,268)
Total income tax (benefit) expense, percent											21.90%	23.40%	(165.90%)
[1]	On December 22, 2017, the Tax Cuts and Jobs Act (the “Act”) was signed into law. The Act included numerous changes to existing tax law, including a permanent reduction in the federal corporate income tax rate from 35% to 21% effective January 1, 2018 and repeal of the alternative minimum tax (“AMT”) allowing a refund of existing AMT carryovers during the years 2018 through 2021. As a result, the Company recorded a tax benefit of $29.3 million in the fourth quarter of 2017 related to the revaluation of its net deferred tax liabilities.

Note 12 - Federal and State I_6

Note 12 - Federal and State Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal									$ (56)	$ (48)	$ (79)
State									646	189	441
Total current income tax provision									590	141	362
Deferred:
Federal									2,177	6,185	(24,622)
State									(552)	1,021	(8)
Total deferred income tax provision (benefit)									1,625	7,206	(24,630)
Total income tax provision (benefit) expense	$ (4,168)	$ 1,264	$ 2,301	$ 2,818	$ 1,883	$ 3,129	$ 2,005	$ 330	$ 2,215	$ 7,347	$ (24,268)

Note 13 - Stock-based Compens_3

Note 13 - Stock-based Compensation (Details Textual) - USD ($)	May 29, 2014	May 31, 2019	Apr. 30, 2019	Dec. 31, 2018	Mar. 31, 2018	Apr. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross											0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance												45,068	56,131
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value										$ 953,000	$ 719,000	$ 256,000
Share-based Payment Arrangement, Expense										912,000	732,000	614,000
Share-based Payment Arrangement, Expense, Tax Benefit										$ 200,000	$ 172,000	$ 231,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Diluted										$ 0.12	$ 0.09
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total								$ 924,000		$ 924,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Basic										$ 0.12	0.10
Allocated Share-based Compensation Expense, Impact on Earnings Per Share, Basic and Diluted												$ 0.26
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance												0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value											$ 6.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value											$ 1,406,000	$ 82,000
Proceeds from Stock Options Exercised										$ 0	485,000	123,000
Amortization, Current Year [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total								399,000		399,000
Amortization Year 2 [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total								263,000		263,000
Amortization, Year 3 [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total								$ 262,000		$ 262,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value										$ 48.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period										2,058
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value										$ 36.35
Accrual Shares to Each Non-employee Director [Member]
Share-based Payment Arrangement, Expense										$ 100,000	$ 70,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period											276
Accrual Shares to Each Non-employee Director [Member] | Nine Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period								205
Accrual Shares to Each Non-employee Director [Member] | One Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period										213
Nonqualified Options [Member] | Annual Grant to Non-employee [Member]
Share-based Payment Arrangement, Expense												$ 70,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period									614
The 2014 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	750,000
Number of Common Stock Accrued Under Share-based Compensation Plan for Each Non-employee Director		213	1,845		1,932		4,298
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross											0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance				0							0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant								407,000		407,000
The 2014 Stock Option Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 36.35
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				33,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
The 2014 Stock Option Plan [Member] | Restricted Stock [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value						$ 16.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period						100,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						3 years
The 2014 Stock Option Plan [Member] | Stock Award [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 47.06	$ 48.94		$ 36.35		$ 16.29
The 2014 Stock Option Plan [Member] | Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%

Note 13 - Stock-based Compens_4

Note 13 - Stock-based Compensation - Employee Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Outstanding (in shares)		45,068	56,131
Outstanding (in dollars per share)		$ 10.79	$ 10.85
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted (in dollars per share)
Exercised (in shares)		(45,005)	(11,063)
Exercised (in dollars per share)		$ 10.79	$ 11.13
Canceled (in shares)		(63)
Canceled (in dollars per share)		$ 11.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		0
Outstanding (in shares)			45,068
Outstanding (in dollars per share)			$ 10.79
Options exercisable (in shares)
Options exercisable (in dollars per share)

Note 13 - Stock Based Compensat

Note 13 - Stock Based Compensation - Summary of Nonvested Restricted Stock (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Granted (in shares)
Granted - weighted average grant date fair value (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		$ 6.34
Restricted Stock [Member]
Non-vested (in shares)	100,917
Nonvested - weighted average grant date fair value (in dollars per share)	$ 23.09
Granted (in shares)	2,058
Granted - weighted average grant date fair value (in dollars per share)	$ 48.75
Canceled/forfeited/expired (in shares)	(3,500)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 36.35
Vested (in shares)	(44,016)
Vested - weighted average grant date fair value (in dollars per share)	$ 21.65
Non-vested (in shares)	55,459	100,917
Nonvested - weighted average grant date fair value (in dollars per share)	$ 24.35	$ 23.09

Note 14 - Earnings Per Share -

Note 14 - Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income									$ 7,900	$ 23,994	$ 38,899
Basic (in shares)	5,751	5,756	5,901	5,921	5,975	6,034	6,159	6,168	5,832	6,083	6,331
Dilutive effect of common stock equivalents (in shares)									48	76	67
Diluted weighted average common shares outstanding (in shares)	5,751	5,799	5,949	5,985	6,029	6,088	6,229	6,264	5,880	6,159	6,398
Basic (in dollars per share)	$ (2.37)	$ 0.80	$ 1.47	$ 1.40	$ 1.02	$ 1.53	$ 1.18	$ 0.22	$ 1.35	$ 3.94	$ 6.14
Diluted (in dollars per share)	$ (2.37)	$ 0.79	$ 1.45	$ 1.39	$ 1.01	$ 1.52	$ 1.17	$ 0.22	$ 1.34	$ 3.90	$ 6.08

Note 15 - Benefit Plan (Details

Note 15 - Benefit Plan (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage	20.00%
Defined Contribution, Fully Vested Period	5 years
Defined Contribution Plan, Cost	$ 198,000	$ 176,000	$ 179,000

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Details Textual)	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 01, 2019USD ($)	Dec. 31, 2015	Dec. 31, 2014
Self Insurance Auto Liability Claims Threshold Amount				$ 1,000,000
Operating Leases Number of Trucks			56		471	471
Operating Leases, Rent Expense, Total	$ 0	$ 47,000	$ 5,460,000
Settlement Of Collective And Class Action Lawsuit [Member]
Loss Contingency Accrual, Ending Balance	$ 16,500,000

Note 17 - Leases (Details Textu

Note 17 - Leases (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Operating Lease, Term of Contract	5 years
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2,400,000
Operating Lease, Payments	300,000
Property, Plant and Equipment, Gross, Ending Balance	563,162,000	$ 492,325,000
Property, Plant and Equipment, Net, Ending Balance	387,275,000	354,587,000
Lessor, Operating Lease, Payments to be Received, Total	18,792,000
Depreciation, Total	55,107,000	49,387,000	$ 42,274,000
Operating Leases, Future Minimum Payments Receivable, Total		22,319,000
Majority Shareholder [Member]
Operating Lease, Payments	813,756
Trucks under Operating Lease [Member]
Property, Plant and Equipment, Gross, Ending Balance	60,130,000
Property, Plant and Equipment, Net, Ending Balance	33,757,000
Lessor, Operating Lease, Payments to be Received, Total	18,792,000	22,319,000
Depreciation, Total	6,700,000
Shop and Office Space [Member] | Majority Shareholder [Member]
Property, Plant and Equipment, Gross, Ending Balance	1,697,000
Property, Plant and Equipment, Net, Ending Balance	1,080,000
Lessor, Operating Lease, Payments to be Received, Total	$ 12,000
Trucks [Member]
Property Subject to or Available for Operating Lease, Gross		61,061,000
Property Subject to or Available for Operating Lease, Net, Total		34,299,000
Trucks [Member] | Minimum [Member]
Lessor, Operating Lease, Term of Contract	7 years
Trucks [Member] | Maximum [Member]
Lessor, Operating Lease, Term of Contract	60 years
Building [Member]
Property Subject to or Available for Operating Lease, Gross		1,697,000
Property Subject to or Available for Operating Lease, Net, Total		1,138,000
Operating Leases, Future Minimum Payments Receivable, Total		12,000
Shop and Office Space [Member]
Operating Leases, Future Minimum Payments Receivable, Total		$ 284,000
Operating Lease Liabilities [Member]
Operating Lease, Liability, Total	$ 2,100,000
Accrued Expenses And Other Liabilities And Other Long-term Liabilities [Member]
Operating Lease, Liability, Total	2,098,000
Operating Lease, Right-of-Use Asset	$ 2,098,000

Note 17 - Leases - Operating Le

Note 17 - Leases - Operating Lease (Details) $ in Thousands	Dec. 31, 2019USD ($)
2020	$ 616
2021	627
2022	544
2023	340
2024	114
Thereafter	0
Total undiscounted operating lease payments	2,241
Less: Imputed interest	$ (143)
Weighted-average remaining lease term for operating leases (in years) (Year)	3 years 270 days
Weighted-average discount rate for operating leases	3.59%
Accrued Expenses And Other Liabilities And Other Long-term Liabilities [Member]
Present value of operating lease liabilities	$ 2,098
Right-of-use assets (recorded in other non-current assets)	2,098
Total operating lease liabilities	2,098
Other Current Liabilities [Member]
Current lease liabilities (recorded in other current liabilities)	616
Other Noncurrent Liabilities [Member]
Long-term lease liabilities (recorded in other long-term liabilities)	$ 1,482

Note 17 - Leases - Lease Cost (

Note 17 - Leases - Lease Cost (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Right-of-Use leases		$ 255
Short-term leases (1)	[1]	2,214	2,174
Total		$ 2,469	$ 2,174
[1]	Short-term lease cost includes leases with a term of twelve months or less and leases with options for early cancellation.

Note 17 - Leases - Lease Revenu

Note 17 - Leases - Lease Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lease revenue	$ 9,375	$ 8,256
Trucks under Operating Lease [Member]
Lease revenue	9,220	8,101
Dock Space under Operating Lease [Member]
Lease revenue	$ 155	$ 155

Note 17 - Leases - Lease Receiv

Note 17 - Leases - Lease Receivables (Details) $ in Thousands	Dec. 31, 2019USD ($)
2020	$ 7,811
2021	3,847
2022	3,404
2023	2,728
2024	1,002
Thereafter
Total future minimum lease payments receivable	$ 18,792

Note 17 - Leases - Future Minim

Note 17 - Leases - Future Minimum Annual Lease Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
2019	$ 9,649
2020	6,497
2021	2,417
2022	2,025
2023	1,731
Thereafter
Total future minimum lease payments	$ 22,319

Note 18 - Fair Value of Finan_3

Note 18 - Fair Value of Financial Instruments - Securities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Marketable equity securities	$ 29,521	$ 27,549
Fair Value, Inputs, Level 1 [Member]
Marketable equity securities	29,521	27,549
Fair Value, Inputs, Level 2 [Member]
Marketable equity securities
Fair Value, Inputs, Level 3 [Member]
Marketable equity securities

Note 18 - Fair Value of Finan_4

Note 18 - Fair Value of Financial Instruments - Fair Value of Long-term Debt Other Than Lines of Credit (Details) - Equipment Financing [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Reported Value Measurement [Member]
Long-term debt	$ 224,777	$ 211,031
Estimate of Fair Value Measurement [Member]
Long-term debt	$ 228,449	$ 210,234

Note 19 - Related Party Trans_2

Note 19 - Related Party Transactions (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 01, 2019
Self Insurance Auto Liability Claims Threshold Amount				$ 1,000,000
Auto Liability Coverage [Member]
Self Insurance Auto Liability Claims Threshold Amount	$ 1,000,000			$ 1,000,000
Majority Shareholder [Member]
Revenue from Related Parties	2,691,000	$ 2,854,000	$ 585,000
Related Party Transaction, Expenses from Transactions with Related Party	9,190,000	9,859,000	7,497,000
Due from Related Parties, Total	1,052,000	149,000
Due to Related Parties, Total	961,000	2,161,000
Majority Shareholder [Member] | Freight Transportation [Member]
Accounts Receivable, Related Parties	1,052,000	147,000
Majority Shareholder [Member] | Maintenance Performed and Charges Paid to Third Parties on Behalf of Their Affiliate and Charged Back [Member]
Accounts Receivable, Related Parties	0	2,000
Majority Shareholder [Member] | Insurance Premiums Paid in Excess of Amounts Earned [Member]
Accounts Receivable, Related Parties	0	29,000
Majority Shareholder [Member] | Physical Damage Coverage [Member]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	0	1,271,000	1,808,000
Majority Shareholder [Member] | Auto Liability Coverage [Member]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	10,345,000	10,987,000	10,860,000
Majority Shareholder [Member] | General Liability Coverage [Member]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	0	24,000	35,000
Majority Shareholder [Member] | Workers Compensation Coverage [Member]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	$ 266,000	$ 301,000	$ 286,000

Note 20 - Quarterly Results o_3

Note 20 - Quarterly Results of Operations (Unaudited) - Quarterly Financial Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating revenues	$ 123,497	$ 128,994	$ 133,000	$ 128,686	$ 138,176	$ 140,325	$ 135,302	$ 119,458	$ 514,177	$ 533,261	$ 437,838
Operating expenses and costs	141,381	121,461	119,789	118,999	123,500	127,172	125,285	115,702	501,630	491,659	425,158
Operating income (loss)	(17,884)	7,533	13,211	9,687	14,676	13,153	10,017	3,756	12,547	41,602	12,680
Non-operating income (loss)	2,457	490	(197)	3,472	(4,704)	935	632	(879)	6,222	(4,016)	5,853
Interest expense	(2,377)	(2,178)	(2,059)	(2,040)	(2,019)	(1,711)	(1,355)	(1,160)	(8,654)	(6,245)	(3,902)
Income tax (expense) benefit	4,168	(1,264)	(2,301)	(2,818)	(1,883)	(3,129)	(2,005)	(330)	(2,215)	(7,347)	24,268
Net income	$ (13,636)	$ 4,581	$ 8,654	$ 8,301	$ 6,070	$ 9,248	$ 7,289	$ 1,387	$ 7,900	$ 23,994	$ 38,899
Basic (in dollars per share)	$ (2.37)	$ 0.80	$ 1.47	$ 1.40	$ 1.02	$ 1.53	$ 1.18	$ 0.22	$ 1.35	$ 3.94	$ 6.14
Diluted (in dollars per share)	$ (2.37)	$ 0.79	$ 1.45	$ 1.39	$ 1.01	$ 1.52	$ 1.17	$ 0.22	$ 1.34	$ 3.90	$ 6.08
Basic (in shares)	5,751	5,756	5,901	5,921	5,975	6,034	6,159	6,168	5,832	6,083	6,331
Diluted (in shares)	5,751	5,799	5,949	5,985	6,029	6,088	6,229	6,264	5,880	6,159	6,398