USA Truck (USAK) 10-K 24 Feb 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Document and Entity Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2020
Entity File Number	1-35740
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0556971
Entity Address, Address Line One	3200 Industrial Park Road
Entity Address, City or Town	Van Buren
Entity Address, State or Province	AR
Entity Address, Postal Zip Code	72956
City Area Code	479
Local Phone Number	471-2500
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	USAK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
ICFR Auditor Attestation Flag	true
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 62,740,102
Entity Common Stock, Shares Outstanding (in shares)		8,744,295
Entity Registrant Name	USA Truck Inc.
Entity Central Index Key	0000883945
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and restricted cash (restricted cash of $243 and $0, respectively)	$ 325	$ 97
Accounts receivable, net of allowance for doubtful accounts of $617 and $369, respectively	63,984	49,853
Other receivables	2,873	5,408
Inventories	975	769
Assets held for sale	2,635	2,542
Prepaid expenses and other current assets	8,749	7,855
Total current assets	79,541	66,524
Property and equipment:
Land and structures	33,488	33,077
Revenue equipment	305,509	309,573
Service, office and other equipment	30,331	30,235
Property and equipment, at cost	369,328	372,885
Accumulated depreciation and amortization	(150,173)	(124,216)
Property and equipment, net	219,155	248,669
Operating leases - right of use assets	28,154	11,775
Goodwill	5,231	5,231
Other intangibles, net	15,105	16,453
Other assets	3,046	2,058
Total assets	350,232	350,710
Current liabilities:
Accounts payable	27,045	29,421
Current portion of insurance and claims accruals	9,846	12,466
Accrued expenses	10,798	6,518
Current finance lease obligations	11,655	30,779
Current operating lease obligations	6,838	6,050
Long-term debt, current maturities	6,791	6,165
Total current liabilities	72,973	91,399
Other long-term liabilities	4,817	80
Long-term debt, less current maturities	81,352	83,349
Long-term finance lease obligations	54,482	58,397
Long-term operating lease obligations	21,690	5,812
Deferred income taxes	23,414	24,017
Insurance and claims accruals, less current portion	6,803	9,445
Total liabilities	265,531	272,499
Stockholders' equity:
Preferred Stock, $0.01 par value; 1,000,000 shares authorized; none issued	0	0
Common Stock, $0.01 par value; 30,000,000 shares authorized; issued 12,037,966 shares, and 11,987,572 shares, respectively	120	120
Additional paid-in capital	60,692	63,238
Retained earnings	78,515	73,769
Less treasury stock, at cost (3,293,223 shares, and 3,434,231 shares, respectively)	(54,626)	(58,916)
Total stockholders' equity	84,701	78,211
Total liabilities and stockholders' equity	$ 350,232	$ 350,710

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Restricted cash	$ 243	$ 0
Allowance for doubtful accounts	$ 617	$ 369
Stockholders' equity:
Preferred Stock, par or stated value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred Stock, shares issued (in shares)	0	0
Common Stock, par or stated value per share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	30,000,000	30,000,000
Common Stock, shares issued (in shares)	12,037,966	11,987,572
Treasury stock, shares (in shares)	3,293,223	3,434,231

CONSOLIDATED STATEMENTS OF (LOS

CONSOLIDATED STATEMENTS OF (LOSS) INCOME AND COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF (LOSS) INCOME AND COMPREHENSIVE (LOSS) INCOME
Operating revenue	$ 551,138	$ 522,631
Operating expenses:
Salaries, wages and employee benefits	141,590	136,877
Fuel and fuel taxes	38,804	55,096
Depreciation and amortization	41,359	37,193
Insurance and claims	19,855	27,176
Equipment rent	9,382	10,174
Operations and maintenance	35,201	33,310
Purchased transportation	226,716	194,629
Operating taxes and licenses	4,795	4,843
Communications and utilities	3,470	3,488
Loss (gain) on disposal of assets, net	427	(495)
Asset impairments	588	786
Other	16,093	17,239
Total operating expenses	538,280	520,316
Operating income	12,858	2,315
Other expenses:
Interest expense, net	5,605	6,597
Other, net	298	572
Total other expenses, net	5,903	7,169
Income (loss) before income taxes	6,955	(4,854)
Income tax expense (benefit)	2,209	(156)
Consolidated net income (loss) and comprehensive income (loss)	$ 4,746	$ (4,698)
Net earnings (loss) per share:
Average shares outstanding (basic) (in shares)	8,775	8,525
Basic earnings (loss) per share (in dollars per share)	$ 0.54	$ (0.55)
Average shares outstanding (diluted) (in shares)	8,874	8,525
Diluted earnings (loss) per share (in dollars per share)	$ 0.53	$ (0.55)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Total
Balance at Dec. 31, 2018	$ 120	$ 66,433	$ 78,467	$ (63,747)	$ 81,273
Balance (in shares) at Dec. 31, 2018	12,012
Increase (Decrease) in Stockholders' Equity
Issuance of treasury stock		(4,831)		4,831
Stock-based compensation		1,714			1,714
Forfeited restricted stock (in shares)	(18)
Net share settlement related to restricted stock vesting		(78)			(78)
Net share settlement related to restricted stock vesting (in shares)	(6)
Net income			(4,698)		(4,698)
Balance at Dec. 31, 2019	$ 120	63,238	73,769	(58,916)	78,211
Balance (in shares) at Dec. 31, 2019	11,988
Increase (Decrease) in Stockholders' Equity
Issuance of treasury stock		(4,290)		4,290	0
Stock-based compensation		1,805			1,805
Restricted stock award grant (in shares)	77
Forfeited restricted stock (in shares)	(16)
Net share settlement related to restricted stock vesting		(61)			(61)
Net share settlement related to restricted stock vesting (in shares)	(11)
Net income			4,746		4,746
Balance at Dec. 31, 2020	$ 120	$ 60,692	$ 78,515	$ (54,626)	$ 84,701
Balance (in shares) at Dec. 31, 2020	12,038

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income (loss)	$ 4,746	$ (4,698)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	41,359	37,193
Provision for doubtful accounts	535	(145)
Deferred income tax, net	(603)	499
Share-based compensation	1,805	1,714
Loss (gain) on disposal of assets, net	427	(495)
Asset impairments	588	786
Other	287	83
Changes in operating assets and liabilities:
Accounts and other receivables	(12,130)	7,761
Inventories and prepaid expenses	(1,100)	4,818
Accounts payable and accrued expenses	6,605	186
Insurance and claims accruals	(4,744)	(3,184)
Other long-term assets and liabilities	(219)	(1,055)
Net cash provided by operating activities	37,556	43,463
Investing activities:
Acquisition of Davis Transfer Company (net of cash)	0	(305)
Capital expenditures	(10,716)	(34,675)
Proceeds from sale of property and equipment	3,182	10,183
Net cash used in investing activities	(7,534)	(24,797)
Financing activities:
Borrowings under long-term debt	65,955	85,600
Payments on long-term debt	(65,456)	(102,110)
Principal payments on financing lease obligations	(31,519)	(14,016)
Proceeds from obligation under finance lease	0	12,795
Payments on obligation under finance lease	(1,870)	(1,013)
Payment of debt issuance costs	0	(538)
Net change in bank drafts payable	3,157	(198)
Net payments for tax withholdings for vested stock-based awards	(61)	(78)
Net cash used in financing activities	(29,794)	(19,558)
Increase (decrease) in cash and restricted cash	228	(892)
Cash and restricted cash:
Beginning of period	97	989
End of period	325	97
Supplemental disclosure of cash flow information:
Interest	5,477	6,357
Income taxes	315	1,232
Supplemental disclosure of non-cash investing:
Purchase of revenue equipment included in accounts payable	$ 0	$ 3,019

DESCRIPTION OF BUSINESS AND SUM

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	USA Truck Inc. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS NOTE 1 . Description of business USA Truck Inc., a Delaware corporation and subsidiaries (together, the “Company”), is headquartered in Van Buren, Arkansas. The Company transports freight throughout the contiguous United States, into and out of portions of Canada, and into and out of Mexico by offering through-trailer service from our terminal in Laredo, Texas. The Company has two reportable segments: (i) Trucking, consisting of the Company’s truckload and dedicated freight service offerings, and (ii) USAT Logistics, consisting of the Company’s freight brokerage, logistics, and rail intermodal service offerings. Basis of presentation The accompanying consolidated financial statements include the accounts and operations of USA Truck Inc., and present our financial position as of December 31, 2020 and 2019 and the results of our operations, comprehensive income (loss) and cash flows for the years ended 2020 and 2019. The accompanying financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”), and include all adjustments necessary for the fair presentation of the periods presented. The accompanying consolidated financial statements include USA Truck Inc., and its wholly owned subsidiaries: International Freight Services, Inc. (“IFS”), a Delaware corporation; Skyraider Risk Retention Group Inc. (“SRRG”), a South Carolina corporation; Davis Transfer Company Inc. (“DTC”), a Georgia corporation; Davis Transfer Logistics Inc. (“DTL”), a Georgia corporation; and B & G Leasing, L.L.C. (“B & G”), a Georgia limited liability company. Collectively, DTC, DTL and B&G comprise “Davis Transfer Company”. References in this report to “it,” “we,” “us,” “our,” or the “Company,” and similar expressions refer to USA Truck Inc. and its subsidiaries. All significant intercompany balances and transactions have been eliminated in preparing the consolidated financial statements. Certain amounts reported in prior periods have been reclassified to conform to the current year presentation. Risks and uncertainties In March 2020, the World Health Organization declared the novel strain of coronavirus (“COVID-19”) a global pandemic, and the President of the United States declared the COVID-19 outbreak a national emergency. The rapid spread of the pandemic and the continuously evolving responses to combat it have had an increasingly negative impact on the global economy. In view of the rapidly changing business environment, unprecedented market volatility and heightened degree of uncertainty resulting from COVID-19, we are currently unable to fully determine its future impact on our business. We continue to monitor the progression of the pandemic, further government responses and development of treatments and vaccines and the resulting potential effect on our financial position, results of operations, cash flows and liquidity. These events could have an impact in future periods on certain estimates used in the preparation of our financial results, including, but not limited to impairment of goodwill, other intangible assets and other long-lived assets, income tax provision and recoverability of certain receivables. Should the pandemic continue for an even further extended period of time, the impact on our operations could have a material adverse effect on our financial condition, results of operations, cash flows and liquidity. Use of estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors which management believes to be reasonable under the circumstances. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. ​ Change in estimate The Company reviews the estimated useful lives and salvage values of its fixed assets on an ongoing basis, based upon, among other things, our experience with similar assets, conditions in the used revenue equipment market, and prevailing industry practice. During the first quarter of 2020, the Company lowered the salvage value of its tractor fleet from 30% to 25% to better reflect current estimates of the value of such equipment upon its retirement. This change is being accounted for as a change in estimate. During 2020, this change in estimate resulted in an increase in depreciation and amortization expense of approximately $2.7 million. Cash, cash equivalents and restricted cash Cash and cash equivalents consist of highly liquid investments with original maturities of three months or less when acquired. We had restricted cash of $0.2 million at December 31, 2020 and no restricted cash at December 31, 2019. This cash is restricted for the purpose of paying potential insurance claims in our wholly owned captive insurance company and is included in the “Cash and restricted cash” line item in our consolidated balance sheet. Bank overdrafts The Company classifies bank overdrafts in current liabilities as accounts payable and does not offset other positive bank account balances located at the same or other financial institutions. Bank overdrafts generally represent checks written that have not yet cleared the Company’s bank accounts. The majority of the Company’s bank accounts are zero balance accounts that are funded at the time items clear against the account by drawings against a line of credit; therefore, the outstanding checks represent bank overdrafts. Bank overdrafts as of December 31, 2020 and 2019 were approximately $5.2 million and $2.1 million, respectively. Allowance for doubtful accounts The allowance for doubtful accounts is management’s estimate of the amount of probable credit losses in the Company’s existing accounts receivable. Management reviews the financial condition of customers for granting credit and determines the allowance based on analysis of individual customers’ financial condition, historical write-off experience and national economic conditions. The Company evaluates the adequacy of its allowance for doubtful accounts quarterly. The Company does not have any off-balance sheet credit exposure related to its customers. The following table provides a summary of the activity in the allowance for doubtful accounts for the years ended December 31, 2020 and 2019, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Balance at beginning of year ​ $ 369 ​ $ 575 Provision for doubtful accounts ​ 535 ​ (145) Uncollectible accounts written off, net of recovery ​ (287) ​ (61) Balance at end of year ​ $ 617 ​ $ 369 ​ ​ ​ ​ ​ ​ ​ ​ Assets held for sale When we plan to dispose of property by sale, the asset is carried in the financial statements at the lower of the carrying amount or estimated fair value, less cost to sell, and is reclassified to Assets held for sale. Additionally, after such reclassification, there is no further depreciation taken on the asset. In order for an asset to be classified as held for sale, management must approve and commit to a formal plan of disposition, the sale must be anticipated during the ensuing year, the asset must be actively marketed, available for immediate sale, and meet certain other specified criteria. ​ Goodwill Goodwill represents the excess of cost over the fair value of net assets of acquired businesses. Goodwill is not amortized, but instead is evaluated for impairment periodically. We evaluate goodwill for impairment annually during the fourth quarter, or more often if events or circumstances indicate that goodwill might be impaired. The reporting unit or units used to evaluate and measure goodwill for impairment are determined primarily from the manner in which the business is managed or operated. A reporting unit is an operating segment or a component that is one level below an operating segment. There were no impairments of goodwill during 2020 or 2019. Intangibles Intangibles include a trade name, non-compete agreement and customer relationships. The non-compete agreement, and customer relationships are subject to amortization and are amortized on a straight-line basis over their useful lives. We periodically evaluate amortizable intangible assets for impairment upon occurrence of events or changes in circumstances that indicate the carrying amount of intangible assets may not be recoverable (see Note 4 – Intangible Assets). Treasury stock The Company uses the cost method to record treasury stock purchases whereby the entire cost of the acquired shares of our common stock is recorded as treasury stock (at cost). When the Company subsequently reissues these shares, proceeds in excess of cost upon the issuance of treasury shares are credited to additional paid in capital, while any deficiency is charged to additional paid in capital. The Company recorded charges to additional paid in capital of $4.3 million and $4.8 million for each of the years ended December 31, 2020 and 2019, respectively. During both 2020 and 2019, these charges were for the issuance of shares awarded as equity grants. Earnings (loss) per share data The Company calculates basic earnings (loss) per share based on the weighted average number of its common shares outstanding for the applicable period. The Company calculates diluted earnings per share based on the weighted average number of its common shares outstanding for the period plus all potentially dilutive securities using the treasury stock method, whereby the Company assumes that all such shares are converted into common shares at the beginning of the period, if deemed to be dilutive. If the Company incurs a loss from continuing operations, the effect of potentially dilutive common stock equivalents are excluded from the calculation of diluted earnings per share because the effect would be anti-dilutive. Performance shares are excluded from contingent shares for purposes of calculating diluted weighted average shares until the performance measure criteria is probable and shares are likely to be issued. Dividend policy The Company has not paid any dividends on its common stock to date, and does not anticipate paying any dividends at the present time. The Company currently intends to retain all of its earnings, if any, for use in the expansion and development of its business and reduction of debt. In the event the financial covenant is applicable under the Company’s Credit Facility, restrictions are placed on our ability to pay dividends. Future payments of dividends will depend upon the Company’s financial condition, results of operations, capital commitments, restrictions under then-existing agreements, legal requirements, and other factors the Company deems relevant. Inventories Inventories consist of tires and parts, and are stated at the lower of cost or net realizable value on a first-in first-out basis. ​ Property and equipment Property and equipment is capitalized in accordance with the Company’s asset capitalization policy. The capitalized property is depreciated by the straight-line method using the following estimated useful lives: structures – 15 years to 40 years; revenue equipment – 5 3 Leases The Company leases property and equipment under finance and operating leases. The Company has operating and finance leases for revenue equipment, real estate, information technology equipment (primarily servers and copiers), and various other equipment used in operating our business. Certain leases for revenue equipment and information technology include options to purchase or extend, guarantee residual values, or early termination rights. Determining the lease term and amount of lease payments to include in the calculation of the right-of-use (“ROU”) asset and lease liability for leases containing options requires the use of judgment to determine whether the exercise of an option or feature is reasonably certain, and if the optional period and payments should be included in the calculation of the associated ROU asset and liability. In making this determination, we consider all relevant economic factors that would compel us to exercise or not exercise an option or feature. We recognize a ROU asset and lease liability for operating leases that meet the criteria of Accounting Standards Codification 842. Some of our leases contain both lease and non-lease components, which we have elected to treat as a single lease component. We have also elected not to recognize in our consolidated balance sheets leases that have an original lease term, including reasonably certain renewal or purchase options, of twelve months or less for all classes of underlying assets. Lease costs for short-term leases are recognized on a straight-line basis over the lease term. When available, we use the rate implicit in the lease to discount lease payments; however, the rate implicit in the lease is not readily determinable for all of our leases. In such cases, we use an estimate of our incremental borrowing rate to discount lease payments based on information available at lease commencement. Depreciable lives and salvage value of assets; valuation of long-lived assets We review the appropriateness of depreciable lives and salvage values for each category of property and equipment. These studies utilize models, which take into account actual usage, physical wear and tear, and replacement history to calculate remaining life of our asset base. We also make assumptions regarding future conditions in determining potential salvage values. These assumptions impact the amount of depreciation expense recognized in the period and any gain or loss once the asset is disposed. Actual disposition values may be greater or less than expected due to the length of time before disposition. We review property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We evaluate recoverability of assets to be held and used by comparing the carrying amount of an asset to future net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets, less cost to sell. The Company performed the impairment analysis of the carrying value of its fleet, which is the lowest level of identifiable cash flows. Income taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax basis of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The Company has analyzed filing positions in its federal and applicable state tax returns in all open tax years. The Company’s policy is to recognize interest related to unrecognized tax benefits as interest expense and penalties as operating expenses. The Company analyzes its tax positions on the basis of a two-step process in which (1) it determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, it recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company believes that its income tax filing positions and deductions will be sustained on audit and does not anticipate any adjustments that will result in a material change to its consolidated financial position, results of operations and cash flows. Therefore, no reserves for uncertain income tax positions or associated interest or penalties on uncertain tax positions have been recorded. Claims accruals The primary claims arising against the Company consist of cargo loss and damage, liability, personal injury, property damage, workers’ compensation, and employee medical expenses. The Company’s self-insurance retention levels are $0.05 million for cargo loss and damage claims per occurrence, $2.0 million for bodily injury and property damage claims per occurrence, and $0.5 million for workers’ compensation claims per occurrence. Prior to the Company’s most recent insurance renewal on October 1, 2020, the Company’s self-insurance retention level was $1.0 million for bodily injury and property damage claims per occurrence, but through the formation of SRRG the Company retained the exposure from $1.0 million to $2.0 million. The Company utilizes an actuarial specialist to provide an independent assessment of internally developed accident and workers' compensation accruals twice a year. If adjustments to previously established accruals are required, such amounts are included in operating expenses in the current period. For medical benefits, the Company self-insures up to $0.25 million per plan participant per year with an aggregate claim exposure limit determined by the Company’s year-to-date claims experience and its number of covered team members. The Company has exposure to fluctuations in the frequency and severity of claims and to variations between its estimated and actual ultimate payouts up to the Company’s self-insured retention level. Estimates require judgments concerning the nature and severity of the claim, as well as other factors. Actual settlement of the self-insured claim liabilities could differ from management’s initial assessment due to uncertainties and fact development. Restricted stock Restricted stock cannot be sold by the recipient until its restrictions have lapsed. The Company recognizes compensation expense related to these awards over the vesting periods based on the closing price of the Company’s common stock on the grant dates. If these awards contain performance criteria the grant date fair value is set assuming performance at target, which is the expected level of achievement, and management periodically reviews actual performance against the criteria and adjusts compensation expense accordingly. These shares are considered issued and outstanding under the terms of the respective restricted stock agreements. Revenue recognition Revenue is measured based upon consideration specified in a contract with a customer. The Company recognizes revenue when contractual performance obligations are satisfied by transferring the benefit of the service to our customer. The benefit is transferred to the customer as the service is being provided and revenue is recognized accordingly via time based metrics. A corresponding contract asset of $1.1 million and $0.9 million was recorded in the years ended December 31, 2020 and 2019, respectively, in the “Accounts receivable” line item. The Company is entitled to receive payment as it satisfies performance obligations with customers. The amount of remaining performance obligations relating to loads in process at 11:59 pm as of the end of each reporting period was deemed to be immaterial. ​ Disaggregation of revenue The Company’s revenue types are freight revenue, fuel surcharge and accessorial. Freight revenue represents the majority of our revenue and consists of fees earned for freight transportation, excluding fuel surcharge. Fuel surcharge revenue consists of additional fees earned by the Company in connection with the performance of freight transportation services to partially or completely offset the cost of fuel. Accessorial revenue consists of ancillary services provided by the Company, including but not limited to, stop-off charges, loading and unloading charges, tractor or trailer detention charges, expedited charges and repositioning charges. These accessorial charges are recognized as revenue throughout the service provided. The following tables set forth revenue disaggregated by revenue type: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 ​ 2019 ​ Trucking USAT Logistics Eliminations Total Trucking USAT Logistics Eliminations Total Revenue type ​ (in thousands) Freight ​ $ 341,522 ​ $ 176,439 ​ $ (24,072) ​ $ 493,889 ​ $ 323,109 ​ $ 135,704 ​ $ (7,637) ​ $ 451,176 Fuel surcharge ​ 35,049 ​ 11,366 ​ (997) ​ 45,418 ​ 49,059 ​ 15,532 ​ (836) ​ 63,755 Accessorial ​ 7,685 ​ 4,146 ​ — ​ 11,831 ​ 4,925 ​ 2,775 ​ — ​ 7,700 Total ​ $ 384,256 ​ $ 191,951 ​ $ (25,069) ​ $ 551,138 ​ $ 377,093 ​ $ 154,011 ​ $ (8,473) ​ $ 522,631 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accounting standards issued but not yet adopted In

SEGMENT REPORTING

SEGMENT REPORTING	12 Months Ended
	Dec. 31, 2020
SEGMENT REPORTING
SEGMENT REPORTING	NOTE 2. SEGMENT REPORTING The Company’s two reportable segments are Trucking and USAT Logistics. In determining its reportable segments, the Company’s chief operating decision maker focuses on financial information, such as operating revenue, operating expense categories, operating ratios and operating income, as well as on key operating statistics, to make operating decisions. Trucking USAT Logistics. Revenue equipment assets are not allocated to USAT Logistics as freight services for customers are brokered through arrangements with third party motor carriers who utilize their own equipment. To the extent rail intermodal or other USAT Logistics operations require the use of Company-owned assets, they are obtained from the Company’s Trucking segment on an as-needed basis. Depreciation and amortization expense is allocated to USAT Logistics based on the Company-owned assets specifically utilized to generate USAT Logistics revenue. All intercompany transactions between segments reflect rates similar to those that would be negotiated with independent third parties. All other expenses for USAT Logistics are specifically identifiable direct costs or are allocated to USAT Logistics based on relevant cost drivers, as determined by management. Customer Concentration Services provided to the Company’s largest customer generated approximately 11% and 12% of consolidated operating revenue for the years ended December 31, 2020 and 2019, respectively, and operating revenue generated by this customer is reported in both the Trucking and USAT Logistics operating segments. One other customer accounted for 10% or more of operating revenue in the current reporting period, and they also were serviced by both the Trucking and USAT Logistics operating segments. A summary of operating revenue by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Operating revenue ​ (in thousands) Trucking revenue (1) ​ $ 384,256 ​ $ 377,093 Trucking intersegment eliminations ​ (2,667) ​ (1,436) Trucking operating revenue ​ 381,589 ​ 375,657 USAT Logistics revenue ​ 191,951 ​ 154,011 USAT Logistics intersegment eliminations ​ (22,402) ​ (7,037) USAT Logistics operating revenue ​ 169,549 ​ 146,974 Total operating revenue ​ $ 551,138 ​ $ 522,631 ​ ​ ​ ​ ​ ​ ​ 1) Includes foreign revenue of $33.6 million and $37.0 million for the years ended December 31, 2020 and 2019, respectively. A summary of operating income (loss) by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Operating income ​ (in thousands) Trucking ​ $ 9,297 ​ $ (447) USAT Logistics ​ 3,561 ​ 2,762 Total operating income ​ $ 12,858 ​ $ 2,315 ​ ​ ​ ​ ​ ​ ​ A summary of depreciation and amortization by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Depreciation and amortization ​ (in thousands) Trucking ​ $ 40,203 ​ $ 36,245 USAT Logistics ​ 1,156 ​ 948 Total depreciation and amortization ​ $ 41,359 ​ $ 37,193 ​ ​ ​ ​ ​ ​ ​ ​

PREPAID EXPENSES AND OTHER CURR

PREPAID EXPENSES AND OTHER CURRENT ASSETS	12 Months Ended
	Dec. 31, 2020
PREPAID EXPENSES AND OTHER CURRENT ASSETS
PREPAID EXPENSES AND OTHER CURRENT ASSETS	​ ​ NOTE 3. PREPAID EXPENSES AND OTHER CURRENT ASSETS Prepaid expenses and other current assets consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Prepaid licenses, permits and tolls ​ $ 1,677 ​ $ 1,438 Prepaid insurance ​ 5,374 ​ 4,596 Other (1) ​ 1,698 ​ 1,821 Total prepaid expenses and other current assets ​ $ 8,749 ​ $ 7,855 ​ ​ ​ ​ ​ ​ ​ 1) No single item included within other prepaid expenses and other current assets exceeded 5.0% of our total current assets.

INTANGIBLE ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2020
INTANGIBLE ASSETS
INTANGIBLE ASSETS	NOTE 4. INTANGIBLE ASSETS The following tables summarize intangible assets and customer relationships for the years ended December 31, 2020 and 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Amortization ​ ​ ​ ​ ​ ​ ​ ​ period ​ Gross ​ Accumulated ​ Net intangible ​ (years) ​ Amount ​ Amortization ​ assets ​ ​ (dollars in thousands) Trade name ​ indefinite ​ $ 5,000 ​ $ — ​ $ 5,000 Customer relationships ​ 10 ​ 12,900 ​ 2,795 ​ 10,105 Total intangible assets ​ ​ $ 17,900 ​ $ 2,795 ​ $ 15,105 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ ​ Amortization ​ ​ ​ ​ ​ ​ ​ ​ period ​ Gross ​ Accumulated ​ Net intangible ​ (years) ​ Amount ​ Amortization ​ assets ​ ​ (dollars in thousands) Trade name ​ indefinite ​ $ 5,000 ​ $ — ​ $ 5,000 Non-compete agreement ​ 2 ​ 140 ​ 71 ​ 69 Customer relationships ​ 10 ​ 12,900 ​ 1,516 ​ 11,384 Total intangible assets ​ ​ $ 18,040 ​ $ 1,587 ​ $ 16,453 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortization expense was $1.3 million and $1.4 million for the years ended December 31, 2020 and 2019, respectively. The above customer relationships and intangible assets have a remaining life of 94 months. The expected amortization of these assets for the next five successive years and thereafter is as follows: ​ ​ ​ ​ ​ ​ ​ (in thousands) 2021 ​ $ 1,290 2022 ​ 1,290 2023 ​ 1,290 2024 ​ 1,290 2025 ​ ​ 1,290 Thereafter ​ 3,655 Total ​ $ 10,105 ​ ​ ​ ​ ​

ACCRUED EXPENSES

ACCRUED EXPENSES	12 Months Ended
	Dec. 31, 2020
ACCRUED EXPENSES
ACCRUED EXPENSES	NOTE 5. ACCRUED EXPENSES Accrued expenses consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 2019 ​ ​ (in thousands) Salaries, wages and employee benefits ​ $ 6,142 ​ $ 3,668 Federal and state tax accruals ​ 2,649 ​ 1,648 Other (1) ​ 2,007 ​ 1,202 Total accrued expenses ​ $ 10,798 ​ $ 6,518 ​ ​ ​ ​ ​ ​ ​ 1) No single item included within other accrued expenses exceeded 5.0% of our total current liabilities.

LONG-TERM DEBT

LONG-TERM DEBT	12 Months Ended
	Dec. 31, 2020
LONG-TERM DEBT
LONG-TERM DEBT	NOTE 6. LONG-TERM DEBT Long-term debt consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Revolving credit agreement ​ $ 73,025 ​ $ 73,225 Sale-leaseback finance obligations ​ ​ 9,913 ​ ​ 11,783 Insurance premium financing (2019) ​ ​ — ​ ​ 4,506 Insurance premium financing (2020) ​ ​ 5,064 ​ ​ — Other ​ ​ 141 ​ ​ — ​ ​ ​ 88,143 ​ ​ 89,514 Less current maturities ​ ​ (6,791) ​ ​ (6,165) Total long-term debt ​ $ 81,352 ​ $ 83,349 ​ ​ ​ ​ ​ ​ ​ ​ Credit facility On January 31, 2019, the Company, entered into a five year, $225.0 million senior secured revolving credit facility (the “Credit Facility”) with a group of lenders and Bank of America, N.A., as agent (the “Agent”) pursuant to the terms of an Amended and Restated Loan and Security Agreement. The Credit Facility replaced the Company’s previous five year, $170.0 million senior secured revolving credit facility dated February 15, 2015. On April 7, 2020, the Company, in accordance with the terms of the Credit Agreement, provided notice to the Agent that effective as of April 20, 2020, the Company was permanently reducing the revolving credit commitment under the Credit Agreement by $55.0 million such that the revolving credit commitment is now $170.0 million. The reduction in the revolving credit commitment will also reduce the future fees paid by the Company in connection with such commitment. The Credit Facility is structured as a $170.0 million revolving credit facility, with an accordion feature that, so long as no event of default exists, allows the Company to request an increase in the revolving credit facility of up to $75.0 million, exercisable in increments of at least $20.0 million. The Credit Facility is a five year facility scheduled to terminate on January 31, 2024. Borrowings under the Credit Facility are classified as either “base rate loans” or “LIBOR loans”. Base rate loans accrue interest at a base rate equal to the Agent’s prime rate plus an applicable margin adjusted quarterly between 0.25% and 0.75% based on the Company’s consolidated fixed charge coverage ratio. LIBOR loans accrue interest at the London Interbank Offered Rate (“LIBOR”) plus an applicable margin adjusted quarterly between 1.25% and 1.75% based on the Company’s consolidated fixed charge coverage ratio. The Credit Facility includes, within its $170.0 million revolving credit facility, a letter of credit sub-facility in an aggregate amount of $15.0 million and a swingline sub-facility (the “Swingline”) in an aggregate amount of $25.0 million. An unused line fee of 0.25% is applied to the average daily amount by which the lenders’ aggregate revolving commitments exceed the outstanding principal amount of revolver loans and the aggregate undrawn amount of all outstanding letters of credit issued under the Credit Facility. The Credit Facility is secured by a pledge of substantially all of the Company’s assets, except for any real estate or revenue equipment financed outside the Credit Facility. Borrowings under the Credit Facility are subject to a borrowing base limited to the lesser of (A) $170.0 million; or (B) the sum of (i) 90.0% of eligible investment grade accounts receivable (reduced to 85.0% in certain situations), plus (ii) 85.0% of eligible non-investment grade accounts receivable, plus (iii) the lesser of (a) 85.0% of eligible unbilled accounts receivable and (b) $10.0 million, plus (iv) the product of 85.0% multiplied by the net orderly liquidation value percentage applied to the net book value of eligible revenue equipment, plus (v) 85.0% multiplied by the net book value of otherwise eligible newly acquired revenue equipment that has not yet been subject to an appraisal. The borrowing base is reduced by an availability reserve, including reserves based on dilution and certain other customary reserves. The Credit Facility contains a single financial covenant, which requires a consolidated fixed charge coverage ratio of at least 1.0 to 1.0 that is triggered in the event excess availability under the Credit Facility falls below 10.0% of the lenders’ total commitments. Also, certain restrictions regarding the Company’s ability to pay dividends, make certain investments, prepay certain indebtedness, execute share repurchase programs and enter into certain acquisitions and hedging arrangements are triggered in the event excess availability under the Credit Facility falls below 20.0% of the lenders’ total commitments. The Company had approximately $0.1 million in overnight borrowings under the Swingline as of December 31, 2020. The average interest rate for all borrowings made under the Credit Facility as of December 31, 2020 was 2.12%. As debt is repriced on a monthly basis, the borrowings under the Credit Facility approximate fair value. As of December 31, 2020, the Company had $7.9 million in letters of credit outstanding and had $56.2 million available to borrow under the Credit Facility taking into account borrowing base availability. Sale-leaseback transactions In July 2019, the Company entered into a sale-leaseback transaction whereby it sold tractors for approximately $2.3 million and concurrently entered into a finance lease agreement for the sold tractors with a five year term. Under the lease agreement, the Company paid an initial monthly payment of approximately $0.03 million. At the end of the lease, the Company has the option to purchase the tractors. This transaction does not qualify for sale-leaseback accounting due to the option to repurchase the tractors and is therefore treated as a financing obligation. In April 2019, the Company entered into a sale-leaseback transaction whereby it sold tractors for approximately $10.5 million and concurrently entered into a finance lease agreement for the sold tractors with a five year term. Under the lease agreement, the Company paid an initial monthly payment of approximately $0.1 million. At the end of the lease, the Company has the option to purchase the tractors for the greater of fair market value or 32.5% of the original cost. This transaction does not qualify for sale-leaseback accounting due to the option to repurchase the tractors and is therefore treated as a financing obligation. Insurance premium financing In October 2020, the Company entered into a short-term agreement to finance approximately $5.1 million with a third-party financing company for a portion of the Company’s annual insurance premiums. In October 2019, the Company entered into a short-term agreement to finance approximately $4.5 million with a third-party financing company for a portion of the Company’s annual insurance premiums. During the third quarter of 2020, this note was paid in full.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2020
LEASES
LEASES	​ ​ NOTE 7. LEASES The components of lease expense for the year ended December 31, 2020 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended ​ ​ December 31, ​ 2020 2019 ​ ​ (in thousands) Operating lease costs ​ $ 8,069 ​ $ 9,185 Finance lease costs: ​ ​ ​ ​ ​ ​ Amortization of assets ​ 20,555 ​ 13,711 Interest on lease liabilities ​ 3,264 ​ 2,521 Total finance lease costs ​ 23,819 ​ 16,232 Variable and short-term lease costs ​ 2,066 ​ 989 Total lease costs ​ $ 33,954 ​ $ 26,406 ​ ​ ​ ​ ​ ​ ​ ​ Supplemental information and balance sheet location related to leases is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ December 31, 2019 Operating leases: ​ (dollars in thousands) Operating leases - right-of-use assets ​ $ 28,154 $ 11,775 ​ ​ ​ ​ ​ ​ ​ ​ ​ Current operating lease obligations ​ 6,838 ​ 6,050 Long-term operating lease obligations ​ 21,690 ​ 5,812 Total operating lease liabilities ​ $ 28,528 ​ $ 11,862 ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance leases: ​ ​ ​ ​ ​ ​ ​ Property and equipment, at cost ​ 86,281 ​ 120,236 Accumulated amortization ​ (22,991) ​ (30,990) Property and equipment, net ​ $ 63,290 ​ $ 89,246 ​ ​ ​ ​ ​ ​ ​ ​ ​ Current finance lease obligations ​ 11,655 ​ 30,779 Long-term finance lease obligations ​ 54,482 ​ 58,397 ​ ​ $ 66,137 ​ $ 89,176 ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average remaining lease term: ​ (in months) ​ (in months) Operating leases ​ 60 ​ 45 Finance leases ​ 43 ​ 44 ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average discount rate: ​ ​ ​ ​ ​ ​ ​ ​ Operating leases ​ 4.59 % ​ 4.03 % Finance leases ​ 3.73 % ​ 3.34 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental cash flow information related to leases is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ December 31, 2019 Cash paid for amounts included in measurement of liabilities: ​ (in thousands) Operating cash flows from operating leases ​ $ 287 ​ $ 87 Operating cash flows from finance leases ​ ​ 3,264 ​ ​ 2,521 Financing cash flows from finance leases ​ ​ 31,519 ​ ​ 14,016 ​ ​ ​ ​ ​ ​ ​ ROU assets obtained in exchange for lease liabilities: ​ ​ ​ ​ ​ ​ Operating leases ​ $ 23,074 ​ $ 2,319 Finance leases ​ ​ 8,481 ​ ​ 32,440 ​ ​ ​ ​ ​ ​ ​ ​ Maturities of lease liabilities as of the year ended December 31, 2020 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance Leases ​ Operating Leases ​ ​ (in thousands) 2021 ​ $ 13,894 ​ $ 7,004 2022 ​ ​ 13,894 ​ ​ 6,456 2023 ​ ​ 24,711 ​ ​ 6,192 2024 ​ ​ 15,256 ​ ​ 5,918 2025 ​ ​ 4,187 ​ ​ 5,049 Thereafter ​ ​ 75 ​ ​ 1,321 Total lease payments ​ ​ 72,017 ​ ​ 31,940 Less: Imputed interest ​ ​ (5,880) ​ ​ (3,412) Total lease obligations ​ ​ 66,137 ​ ​ 28,528 Less: Current obligations ​ ​ (11,655) ​ ​ (6,838) Long-term lease obligations ​ $ 54,482 ​ $ 21,690 ​ ​ ​ ​ ​ ​ ​ ​ OTHER COMMITMENTS As of December 31, 2020, the Company had no noncancellable commitments for purchases. We anticipate funding future commitments with cash flows from operating and financing activities. RELATED PARTY LEASE In the normal course of business, the Company leases office and shop space from a related party under a monthly operating lease. Rent expense for this space was approximately $0.2 million for each of the years ended December 31, 2020 and 2019. This expense is included in the “Operations and maintenance” line item in the accompanying consolidated statement of income (loss) and comprehensive income (loss).

FEDERAL AND STATE INCOME TAXES

FEDERAL AND STATE INCOME TAXES	12 Months Ended
	Dec. 31, 2020
FEDERAL AND STATE INCOME TAXES
FEDERAL AND STATE INCOME TAXES	​ ​ NOTE 8. FEDERAL AND STATE INCOME TAXES Our income tax expense, deferred tax assets and liabilities, and liabilities for unrecognized tax benefits reflect management’s best estimate of current and future taxes to be paid. We are subject to income taxes in the United States and numerous state jurisdictions. Significant judgments and estimates are required in the determination of the consolidated income tax expense. Deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, which will result in taxable or deductible amounts in the future. Significant components of the Company’s deferred tax assets and liabilities are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Deferred tax assets: ​ (in thousands) Operating lease liabilities ​ $ 7,170 ​ $ 2,981 Accrued expenses not deductible until paid ​ ​ 6,105 ​ ​ 5,215 Goodwill and intangible assets ​ 1,264 ​ 1,426 Finance lease obligations ​ ​ 794 ​ ​ 287 Net operating loss carry forwards ​ 298 ​ 1,643 Revenue recognition ​ 238 ​ 201 Allowance for doubtful accounts ​ 225 ​ 168 Equity incentive compensation ​ 204 ​ 188 Other ​ 5 ​ 60 Total deferred tax assets ​ $ 16,303 ​ $ 12,169 ​ ​ ​ ​ ​ ​ ​ Deferred tax liabilitie ​ ​ Tax over book depreciation ​ $ (30,315) ​ $ (30,941) Operating leases - right of use assets ​ ​ (7,075) ​ ​ (2,959) Prepaid expenses deductible when paid ​ (2,327) ​ (2,095) Other ​ ​ — ​ ​ (191) Total deferred tax liabilities ​ (39,717) ​ (36,186) Net deferred tax liabilities ​ $ (23,414) ​ $ (24,017) ​ The Company has certain state net operating loss carryovers of approximately $0.3 million that expire in varying years through 2040. The Company expects to fully utilize its tax attributes in future years before they expire. Significant components of the provision (benefit) for income taxes are as follows: ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Current: ​ (in thousands) Federal ​ $ 2,410 ​ $ (637) State ​ 211 ​ 173 Total current ​ 2,621 ​ (464) Deferred: ​ ​ Federal ​ (765) ​ 194 State ​ 353 ​ 114 Total deferred ​ (412) ​ 308 Total income tax expense (benefit) ​ $ 2,209 ​ $ (156) ​ ​ A reconciliation between the effective income tax rate and the statutory federal income tax rate of 21% is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 2019 ​ ​ (dollars in thousands) Income tax expense (benefit) at statutory federal rate ​ $ 1,461 ​ $ (1,019) ​ Federal income tax effects of: ​ ​ ​ ​ ​ State income tax benefit ​ (44) ​ (36) ​ Per diem and other nondeductible meals and entertainment ​ 378 ​ 388 ​ Taxes related to prior years ​ ​ 346 ​ ​ — ​ Non-deductible compensation ​ ​ 219 ​ ​ 271 ​ Loss carryback rate benefit ​ ​ (628) ​ ​ — ​ Other ​ (87) ​ (46) ​ Federal income tax expense (benefit) ​ 1,645 ​ (442) ​ State income tax expense ​ 564 ​ 286 ​ Total income tax expense (benefit) ​ $ 2,209 ​ $ (156) ​ ​ ​ ​ ​ ​ ​ ​ ​ Effective tax rate ​ 31.8 % 3.2 % ​ The effective rates for 2020 and 2019 varied from the statutory federal tax rate primarily due to state income taxes and certain non-deductible expenses including a per diem pay structure for our drivers. Due to the partially nondeductible effect of per diem pay, the Company’s tax rate will change based on fluctuations in earnings (losses) and in the number of drivers who elect to receive this pay structure. Generally, as pretax income or loss increases, the impact of the driver per diem program on our effective tax rate decreases, because aggregate per diem pay becomes smaller in relation to pretax income or loss, while in periods where earnings are at or near breakeven the impact of the per diem program on our effective tax rate can be significant. During 2020, the Company benefited from the Coronavirus Aid, Relief and Economic Security Act, which allowed a five year federal net operating loss carryback for federal income tax purposes to tax periods where the federal rate was 35%. Additionally, during 2020 and 2019 the Company’s tax rate was affected by vesting of equity-based compensation at a lower stock price than the price at which it was granted, as well as non-deductible officer compensation, resulting in an increase to tax expense and impacting the effective tax rate.

EQUITY COMPENSATION AND EMPLOYE

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2020
EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS
EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS	NOTE 9. EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS The Company adopted the 2014 Omnibus Incentive Plan (the “Incentive Plan”) in May 2014. The Incentive Plan replaced the 2004 Equity Incentive Plan and provided for the granting of up to 500,000 shares of common stock through equity-based awards to directors, officers and other key employees and consultants. The First Amendment to the Incentive Plan was adopted in May 2017, which, among other things, increased the number of shares of common stock available for issuance under the Incentive Plan by an additional 500,000 shares. The Second Amendment to the Incentive Plan was adopted in May 2019, which, among other things, increased the number of shares of common stock available for issuance under the Incentive Plan by an additional 500,000 shares. As of December 31, 2020, 513,343 shares remain available under the Incentive Plan for the issuance of future equity-based compensation awards. The components of compensation expense recognized, net of forfeiture recoveries, related to equity-based compensation is reflected in the table below for the years indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Stock options ​ $ 268 ​ $ 299 Restricted stock awards ​ 1,537 ​ 1,415 Equity compensation expense ​ $ 1,805 ​ $ 1,714 ​ Compensation expense related to all equity-based compensation awards granted under the Incentive Plan is included in salaries, wages and employee benefits in the accompanying consolidated statements of income (loss) and comprehensive income (loss). Stock options Stock options are the contingent right of award holders to purchase shares of the Company’s common stock at a stated price for a limited time. The fair value of each option award is estimated on the date of grant using the Black-Scholes-Merton option-pricing formula, and is recognized over the vesting period of the award. Historically, the vesting period of option awards has been 3 three ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- Weighted- Aggregate ​ ​ ​ ​ Average ​ Average ​ Intrinsic ​ ​ ​ ​ Exercise ​ Remaining ​ Value (in ​ ​ Number of ​ Price Per ​ Contractual ​ thousands) ​ ​ Shares ​ Share ​ Life (in years) ​ (1) Options outstanding at December 31, 2019 154,223 ​ $ 17.72 9.17 ​ $ — Granted (2) — ​ — — ​ — Exercised — ​ — — ​ — Cancelled/forfeited (33,367) ​ 17.75 — ​ — Expired (11,123) ​ 17.75 — ​ — Outstanding at December 31, 2020 (3) 109,733 ​ $ 17.71 8.16 ​ $ — Exercisable at December 31, 2020 27,429 ​ $ 17.71 8.16 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1) The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price of the option. The per share market value of the Company’s common stock, as determined by the closing price on December 31, 2020 was $8.93 . 2) The weighted-average grant date fair value of options granted during 2019 was $9.12 . 3) The exercise prices of outstanding options granted range from $13.54 to $17.75 as of December 31, 2020. As of December 31, 2020 approximately $0.5 million of unrecognized compensation cost related to nonvested stock options is expected to be recognized over a weighted-average period of 2.2 years. Restricted stock awards Restricted stock awards are shares of the Company’s common stock that are granted subject to defined restrictions. The estimated fair value of restricted stock awards is based upon the closing price of the Company’s common stock on the date of grant. The vesting period of restricted stock awards is ratably over a determined number of years, which has historically been three Information related to the restricted stock awarded for the years ended December 31, 2020 and 2019 is as follows: ​ ​ ​ ​ ​ ​ ​ Number of Weighted-Average Grant ​ ​ Shares ​ Date Fair Value (1) Nonvested shares – December 31, 2018 251,869 ​ $ 17.99 Granted 283,077 ​ 16.91 Forfeited (84,620) ​ 16.36 Vested (61,084) ​ 21.92 Nonvested shares – December 31, 2019 389,242 ​ $ 16.94 Granted 323,915 ​ 3.93 Forfeited (107,968) ​ 11.86 Vested (128,106) ​ 13.60 Nonvested shares – December 31, 2020 477,083 ​ $ 10.16 ​ ​ ​ ​ ​ ​ 1) The shares were valued at the closing price of the Company’s common stock on the date(s) specified by the award agreements. The fair value of stock options and restricted stock that vested during the year is as follows for the periods indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Stock options ​ $ 354 ​ $ — Restricted stock ​ ​ 696 ​ ​ 815 ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2020, approximately $2.1 million of unrecognized compensation cost related to unvested restricted stock awards is expected to be recognized over a weighted-average period of 2.2 years. Employee benefit plans The Company sponsors the USA Truck, Inc. Employees’ Investment Plan, a tax deferred savings plan under section 401(k) of the Internal Revenue Code that covers substantially all team members. Employees can contribute up to any percentage of their compensation, subject to statutory limits, with the Company matching 50% of the first 4% of compensation contributed by each employee. Employees’ rights to employer contributions vest after two years from their date of employment. The Company’s matching contributions to the plan were approximately $0.6 million and $0.7 million for the years ended December 31, 2020 and 2019.

EARNINGS (LOSS) PER SHARE

EARNINGS (LOSS) PER SHARE	12 Months Ended
	Dec. 31, 2020
EARNINGS (LOSS) PER SHARE
EARNINGS (LOSS) PER SHARE	NOTE 10. EARNINGS (LOSS) PER SHARE The following table sets forth the computation of basic and diluted earnings (loss) per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Numerator: ​ (in thousands, except per share amounts) Net income (loss) ​ $ 4,746 ​ $ (4,698) Denominator: ​ ​ Denominator for basic earnings (loss) per share – weighted average shares ​ 8,775 ​ 8,525 Effect of dilutive securities: ​ ​ Employee restricted stock and incentive stock options ​ 99 ​ — Denominator for diluted earnings (loss) per share – adjusted weighted average shares and assumed conversion ​ 8,874 ​ 8,525 Basic earnings (loss) per share ​ $ 0.54 ​ $ (0.55) Diluted earnings (loss) per share ​ $ 0.53 ​ $ (0.55) Weighted average anti-dilutive employee restricted stock and incentive stock options ​ 313 ​ 433 ​ ​ ​ ​ ​ ​ ​ ​

LEGAL PROCEEDINGS

LEGAL PROCEEDINGS	12 Months Ended
	Dec. 31, 2020
LEGAL PROCEEDINGS
LEGAL PROCEEDINGS	NOTE 11. LEGAL PROCEEDINGS The Company is party to routine litigation incidental to its business, primarily involving claims for personal injury and property damage incurred in the transportation of freight. The Company maintains insurance to cover liabilities in excess of certain self-insured retention levels. Though management believes these claims to be immaterial to the Company’s long-term financial position, adverse results of one or more of these claims could have a material adverse effect on the Company’s financial position, results of operations or cash flows in any given reporting period.

LONG-LIVED ASSET IMPAIRMENT

LONG-LIVED ASSET IMPAIRMENT	12 Months Ended
	Dec. 31, 2020
LONG-LIVED ASSET IMPAIRMENT
LONG-LIVED ASSET IMPAIRMENT	​ ​ NOTE 12. LONG-LIVED ASSET IMPAIRMENT During 2020, the Company reviewed the values of its assets held for sale and determined a subset of older model year tractors required an impairment of approximately $0.5 million. In order to determine the fair values of the tractors, auction data was used from recent sales of similar tractors which is a Level 2 fair value measurement under the fair value hierarchy. During 2020, in response to the closure of our Van Buren, Arkansas terminal, the Company contracted with a third-party to appraise the terminal and the owned lands surrounding it. As a result of the appraisal, an impairment was recorded for approximately $0.1 million for a parcel of land that had a book value in excess of its fair value. The appraisal report is considered a Level 2 fair value measurement under the fair value hierarchy. During 2019, the Company reviewed the values of its assets held for sale and determined subsets of tractors that the Company had recently experienced losses on disposal of similar tractors required an impairment of approximately $0.8 million. The fair value was determined using quotes from third parties for the purchase of the tractors which is a Level 1 fair value measurement under the fair value hierarchy.

NEW ACCOUNTING PRONOUNCEMENTS (

NEW ACCOUNTING PRONOUNCEMENTS (Policies)	12 Months Ended
	Dec. 31, 2020
NEW ACCOUNTING PRONOUNCEMENTS
Description of business	Description of business USA Truck Inc., a Delaware corporation and subsidiaries (together, the “Company”), is headquartered in Van Buren, Arkansas. The Company transports freight throughout the contiguous United States, into and out of portions of Canada, and into and out of Mexico by offering through-trailer service from our terminal in Laredo, Texas. The Company has two reportable segments: (i) Trucking, consisting of the Company’s truckload and dedicated freight service offerings, and (ii) USAT Logistics, consisting of the Company’s freight brokerage, logistics, and rail intermodal service offerings.
Basis of presentation	Basis of presentation The accompanying consolidated financial statements include the accounts and operations of USA Truck Inc., and present our financial position as of December 31, 2020 and 2019 and the results of our operations, comprehensive income (loss) and cash flows for the years ended 2020 and 2019. The accompanying financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”), and include all adjustments necessary for the fair presentation of the periods presented. The accompanying consolidated financial statements include USA Truck Inc., and its wholly owned subsidiaries: International Freight Services, Inc. (“IFS”), a Delaware corporation; Skyraider Risk Retention Group Inc. (“SRRG”), a South Carolina corporation; Davis Transfer Company Inc. (“DTC”), a Georgia corporation; Davis Transfer Logistics Inc. (“DTL”), a Georgia corporation; and B & G Leasing, L.L.C. (“B & G”), a Georgia limited liability company. Collectively, DTC, DTL and B&G comprise “Davis Transfer Company”. References in this report to “it,” “we,” “us,” “our,” or the “Company,” and similar expressions refer to USA Truck Inc. and its subsidiaries. All significant intercompany balances and transactions have been eliminated in preparing the consolidated financial statements. Certain amounts reported in prior periods have been reclassified to conform to the current year presentation.
Risks and uncertainties - COVID-19	Risks and uncertainties In March 2020, the World Health Organization declared the novel strain of coronavirus (“COVID-19”) a global pandemic, and the President of the United States declared the COVID-19 outbreak a national emergency. The rapid spread of the pandemic and the continuously evolving responses to combat it have had an increasingly negative impact on the global economy. In view of the rapidly changing business environment, unprecedented market volatility and heightened degree of uncertainty resulting from COVID-19, we are currently unable to fully determine its future impact on our business. We continue to monitor the progression of the pandemic, further government responses and development of treatments and vaccines and the resulting potential effect on our financial position, results of operations, cash flows and liquidity. These events could have an impact in future periods on certain estimates used in the preparation of our financial results, including, but not limited to impairment of goodwill, other intangible assets and other long-lived assets, income tax provision and recoverability of certain receivables. Should the pandemic continue for an even further extended period of time, the impact on our operations could have a material adverse effect on our financial condition, results of operations, cash flows and liquidity.
Use of estimates	Use of estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors which management believes to be reasonable under the circumstances. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates.
Change in estimate	Change in estimate The Company reviews the estimated useful lives and salvage values of its fixed assets on an ongoing basis, based upon, among other things, our experience with similar assets, conditions in the used revenue equipment market, and prevailing industry practice. During the first quarter of 2020, the Company lowered the salvage value of its tractor fleet from 30% to 25% to better reflect current estimates of the value of such equipment upon its retirement. This change is being accounted for as a change in estimate. During 2020, this change in estimate resulted in an increase in depreciation and amortization expense of approximately $2.7 million.
Cash, cash equivalents and restricted cash	Cash, cash equivalents and restricted cash Cash and cash equivalents consist of highly liquid investments with original maturities of three months or less when acquired. We had restricted cash of $0.2 million at December 31, 2020 and no restricted cash at December 31, 2019. This cash is restricted for the purpose of paying potential insurance claims in our wholly owned captive insurance company and is included in the “Cash and restricted cash” line item in our consolidated balance sheet.
Bank overdrafts	Bank overdrafts The Company classifies bank overdrafts in current liabilities as accounts payable and does not offset other positive bank account balances located at the same or other financial institutions. Bank overdrafts generally represent checks written that have not yet cleared the Company’s bank accounts. The majority of the Company’s bank accounts are zero balance accounts that are funded at the time items clear against the account by drawings against a line of credit; therefore, the outstanding checks represent bank overdrafts. Bank overdrafts as of December 31, 2020 and 2019 were approximately $5.2 million and $2.1 million, respectively.
Allowance for doubtful accounts	Allowance for doubtful accounts The allowance for doubtful accounts is management’s estimate of the amount of probable credit losses in the Company’s existing accounts receivable. Management reviews the financial condition of customers for granting credit and determines the allowance based on analysis of individual customers’ financial condition, historical write-off experience and national economic conditions. The Company evaluates the adequacy of its allowance for doubtful accounts quarterly. The Company does not have any off-balance sheet credit exposure related to its customers. The following table provides a summary of the activity in the allowance for doubtful accounts for the years ended December 31, 2020 and 2019, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Balance at beginning of year ​ $ 369 ​ $ 575 Provision for doubtful accounts ​ 535 ​ (145) Uncollectible accounts written off, net of recovery ​ (287) ​ (61) Balance at end of year ​ $ 617 ​ $ 369 ​ ​ ​ ​ ​ ​ ​
Assets held for sale	Assets held for sale When we plan to dispose of property by sale, the asset is carried in the financial statements at the lower of the carrying amount or estimated fair value, less cost to sell, and is reclassified to Assets held for sale. Additionally, after such reclassification, there is no further depreciation taken on the asset. In order for an asset to be classified as held for sale, management must approve and commit to a formal plan of disposition, the sale must be anticipated during the ensuing year, the asset must be actively marketed, available for immediate sale, and meet certain other specified criteria.
Goodwill	​ Goodwill Goodwill represents the excess of cost over the fair value of net assets of acquired businesses. Goodwill is not amortized, but instead is evaluated for impairment periodically. We evaluate goodwill for impairment annually during the fourth quarter, or more often if events or circumstances indicate that goodwill might be impaired. The reporting unit or units used to evaluate and measure goodwill for impairment are determined primarily from the manner in which the business is managed or operated. A reporting unit is an operating segment or a component that is one level below an operating segment. There were no impairments of goodwill during 2020 or 2019.
Intangibles	Intangibles Intangibles include a trade name, non-compete agreement and customer relationships. The non-compete agreement, and customer relationships are subject to amortization and are amortized on a straight-line basis over their useful lives. We periodically evaluate amortizable intangible assets for impairment upon occurrence of events or changes in circumstances that indicate the carrying amount of intangible assets may not be recoverable (see Note 4 – Intangible Assets).
Treasury stock	Treasury stock The Company uses the cost method to record treasury stock purchases whereby the entire cost of the acquired shares of our common stock is recorded as treasury stock (at cost). When the Company subsequently reissues these shares, proceeds in excess of cost upon the issuance of treasury shares are credited to additional paid in capital, while any deficiency is charged to additional paid in capital. The Company recorded charges to additional paid in capital of $4.3 million and $4.8 million for each of the years ended December 31, 2020 and 2019, respectively. During both 2020 and 2019, these charges were for the issuance of shares awarded as equity grants.
Earnings (loss) per share data	Earnings (loss) per share data The Company calculates basic earnings (loss) per share based on the weighted average number of its common shares outstanding for the applicable period. The Company calculates diluted earnings per share based on the weighted average number of its common shares outstanding for the period plus all potentially dilutive securities using the treasury stock method, whereby the Company assumes that all such shares are converted into common shares at the beginning of the period, if deemed to be dilutive. If the Company incurs a loss from continuing operations, the effect of potentially dilutive common stock equivalents are excluded from the calculation of diluted earnings per share because the effect would be anti-dilutive. Performance shares are excluded from contingent shares for purposes of calculating diluted weighted average shares until the performance measure criteria is probable and shares are likely to be issued.
Dividend policy	Dividend policy The Company has not paid any dividends on its common stock to date, and does not anticipate paying any dividends at the present time. The Company currently intends to retain all of its earnings, if any, for use in the expansion and development of its business and reduction of debt. In the event the financial covenant is applicable under the Company’s Credit Facility, restrictions are placed on our ability to pay dividends. Future payments of dividends will depend upon the Company’s financial condition, results of operations, capital commitments, restrictions under then-existing agreements, legal requirements, and other factors the Company deems relevant.
Inventories	Inventories Inventories consist of tires and parts, and are stated at the lower of cost or net realizable value on a first-in first-out basis.
Property and equipment	Property and equipment Property and equipment is capitalized in accordance with the Company’s asset capitalization policy. The capitalized property is depreciated by the straight-line method using the following estimated useful lives: structures – 15 years to 40 years; revenue equipment – 5 3
Leases	Leases The Company leases property and equipment under finance and operating leases. The Company has operating and finance leases for revenue equipment, real estate, information technology equipment (primarily servers and copiers), and various other equipment used in operating our business. Certain leases for revenue equipment and information technology include options to purchase or extend, guarantee residual values, or early termination rights. Determining the lease term and amount of lease payments to include in the calculation of the right-of-use (“ROU”) asset and lease liability for leases containing options requires the use of judgment to determine whether the exercise of an option or feature is reasonably certain, and if the optional period and payments should be included in the calculation of the associated ROU asset and liability. In making this determination, we consider all relevant economic factors that would compel us to exercise or not exercise an option or feature. We recognize a ROU asset and lease liability for operating leases that meet the criteria of Accounting Standards Codification 842. Some of our leases contain both lease and non-lease components, which we have elected to treat as a single lease component. We have also elected not to recognize in our consolidated balance sheets leases that have an original lease term, including reasonably certain renewal or purchase options, of twelve months or less for all classes of underlying assets. Lease costs for short-term leases are recognized on a straight-line basis over the lease term. When available, we use the rate implicit in the lease to discount lease payments; however, the rate implicit in the lease is not readily determinable for all of our leases. In such cases, we use an estimate of our incremental borrowing rate to discount lease payments based on information available at lease commencement.
Depreciable lives and salvage value of assets; valuation of long-lived assets	Depreciable lives and salvage value of assets; valuation of long-lived assets We review the appropriateness of depreciable lives and salvage values for each category of property and equipment. These studies utilize models, which take into account actual usage, physical wear and tear, and replacement history to calculate remaining life of our asset base. We also make assumptions regarding future conditions in determining potential salvage values. These assumptions impact the amount of depreciation expense recognized in the period and any gain or loss once the asset is disposed. Actual disposition values may be greater or less than expected due to the length of time before disposition. We review property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We evaluate recoverability of assets to be held and used by comparing the carrying amount of an asset to future net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets, less cost to sell. The Company performed the impairment analysis of the carrying value of its fleet, which is the lowest level of identifiable cash flows.
Income taxes	Income taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax basis of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The Company has analyzed filing positions in its federal and applicable state tax returns in all open tax years. The Company’s policy is to recognize interest related to unrecognized tax benefits as interest expense and penalties as operating expenses. The Company analyzes its tax positions on the basis of a two-step process in which (1) it determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, it recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company believes that its income tax filing positions and deductions will be sustained on audit and does not anticipate any adjustments that will result in a material change to its consolidated financial position, results of operations and cash flows. Therefore, no reserves for uncertain income tax positions or associated interest or penalties on uncertain tax positions have been recorded.
Claims accruals	Claims accruals The primary claims arising against the Company consist of cargo loss and damage, liability, personal injury, property damage, workers’ compensation, and employee medical expenses. The Company’s self-insurance retention levels are $0.05 million for cargo loss and damage claims per occurrence, $2.0 million for bodily injury and property damage claims per occurrence, and $0.5 million for workers’ compensation claims per occurrence. Prior to the Company’s most recent insurance renewal on October 1, 2020, the Company’s self-insurance retention level was $1.0 million for bodily injury and property damage claims per occurrence, but through the formation of SRRG the Company retained the exposure from $1.0 million to $2.0 million. The Company utilizes an actuarial specialist to provide an independent assessment of internally developed accident and workers' compensation accruals twice a year. If adjustments to previously established accruals are required, such amounts are included in operating expenses in the current period. For medical benefits, the Company self-insures up to $0.25 million per plan participant per year with an aggregate claim exposure limit determined by the Company’s year-to-date claims experience and its number of covered team members. The Company has exposure to fluctuations in the frequency and severity of claims and to variations between its estimated and actual ultimate payouts up to the Company’s self-insured retention level. Estimates require judgments concerning the nature and severity of the claim, as well as other factors. Actual settlement of the self-insured claim liabilities could differ from management’s initial assessment due to uncertainties and fact development.
Restricted stock	Restricted stock Restricted stock cannot be sold by the recipient until its restrictions have lapsed. The Company recognizes compensation expense related to these awards over the vesting periods based on the closing price of the Company’s common stock on the grant dates. If these awards contain performance criteria the grant date fair value is set assuming performance at target, which is the expected level of achievement, and management periodically reviews actual performance against the criteria and adjusts compensation expense accordingly. These shares are considered issued and outstanding under the terms of the respective restricted stock agreements.
Revenue recognition and Disaggregation of revenue	Revenue recognition Revenue is measured based upon consideration specified in a contract with a customer. The Company recognizes revenue when contractual performance obligations are satisfied by transferring the benefit of the service to our customer. The benefit is transferred to the customer as the service is being provided and revenue is recognized accordingly via time based metrics. A corresponding contract asset of $1.1 million and $0.9 million was recorded in the years ended December 31, 2020 and 2019, respectively, in the “Accounts receivable” line item. The Company is entitled to receive payment as it satisfies performance obligations with customers. The amount of remaining performance obligations relating to loads in process at 11:59 pm as of the end of each reporting period was deemed to be immaterial. ​ Disaggregation of revenue The Company’s revenue types are freight revenue, fuel surcharge and accessorial. Freight revenue represents the majority of our revenue and consists of fees earned for freight transportation, excluding fuel surcharge. Fuel surcharge revenue consists of additional fees earned by the Company in connection with the performance of freight transportation services to partially or completely offset the cost of fuel. Accessorial revenue consists of ancillary services provided by the Company, including but not limited to, stop-off charges, loading and unloading charges, tractor or trailer detention charges, expedited charges and repositioning charges. These accessorial charges are recognized as revenue throughout the service provided. The following tables set forth revenue disaggregated by revenue type: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 ​ 2019 ​ Trucking USAT Logistics Eliminations Total Trucking USAT Logistics Eliminations Total Revenue type ​ (in thousands) Freight ​ $ 341,522 ​ $ 176,439 ​ $ (24,072) ​ $ 493,889 ​ $ 323,109 ​ $ 135,704 ​ $ (7,637) ​ $ 451,176 Fuel surcharge ​ 35,049 ​ 11,366 ​ (997) ​ 45,418 ​ 49,059 ​ 15,532 ​ (836) ​ 63,755 Accessorial ​ 7,685 ​ 4,146 ​ — ​ 11,831 ​ 4,925 ​ 2,775 ​ — ​ 7,700 Total ​ $ 384,256 ​ $ 191,951 ​ $ (25,069) ​ $ 551,138 ​ $ 377,093 ​ $ 154,011 ​ $ (8,473) ​ $ 522,631 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Accounting standards issued but not yet adopted	Accounting standards issued but not yet adopted In

DESCRIPTION OF BUSINESS AND S_2

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2020
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Allowance for Credit Losses on Financing Receivables	The following table provides a summary of the activity in the allowance for doubtful accounts for the years ended December 31, 2020 and 2019, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Balance at beginning of year ​ $ 369 ​ $ 575 Provision for doubtful accounts ​ 535 ​ (145) Uncollectible accounts written off, net of recovery ​ (287) ​ (61) Balance at end of year ​ $ 617 ​ $ 369 ​ ​ ​ ​ ​ ​ ​
Disaggregation of Revenue	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 ​ 2019 ​ Trucking USAT Logistics Eliminations Total Trucking USAT Logistics Eliminations Total Revenue type ​ (in thousands) Freight ​ $ 341,522 ​ $ 176,439 ​ $ (24,072) ​ $ 493,889 ​ $ 323,109 ​ $ 135,704 ​ $ (7,637) ​ $ 451,176 Fuel surcharge ​ 35,049 ​ 11,366 ​ (997) ​ 45,418 ​ 49,059 ​ 15,532 ​ (836) ​ 63,755 Accessorial ​ 7,685 ​ 4,146 ​ — ​ 11,831 ​ 4,925 ​ 2,775 ​ — ​ 7,700 Total ​ $ 384,256 ​ $ 191,951 ​ $ (25,069) ​ $ 551,138 ​ $ 377,093 ​ $ 154,011 ​ $ (8,473) ​ $ 522,631 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	12 Months Ended
	Dec. 31, 2020
SEGMENT REPORTING
Schedule of segment information by segment	A summary of operating revenue by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Operating revenue ​ (in thousands) Trucking revenue (1) ​ $ 384,256 ​ $ 377,093 Trucking intersegment eliminations ​ (2,667) ​ (1,436) Trucking operating revenue ​ 381,589 ​ 375,657 USAT Logistics revenue ​ 191,951 ​ 154,011 USAT Logistics intersegment eliminations ​ (22,402) ​ (7,037) USAT Logistics operating revenue ​ 169,549 ​ 146,974 Total operating revenue ​ $ 551,138 ​ $ 522,631 ​ ​ ​ ​ ​ ​ ​ 1) Includes foreign revenue of $33.6 million and $37.0 million for the years ended December 31, 2020 and 2019, respectively. A summary of operating income (loss) by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Operating income ​ (in thousands) Trucking ​ $ 9,297 ​ $ (447) USAT Logistics ​ 3,561 ​ 2,762 Total operating income ​ $ 12,858 ​ $ 2,315 ​ ​ ​ ​ ​ ​ ​ A summary of depreciation and amortization by segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Depreciation and amortization ​ (in thousands) Trucking ​ $ 40,203 ​ $ 36,245 USAT Logistics ​ 1,156 ​ 948 Total depreciation and amortization ​ $ 41,359 ​ $ 37,193 ​ ​ ​ ​ ​ ​ ​

PREPAID EXPENSES AND OTHER CU_2

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
PREPAID EXPENSES AND OTHER CURRENT ASSETS
Schedule of Other Current Assets	Prepaid expenses and other current assets consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Prepaid licenses, permits and tolls ​ $ 1,677 ​ $ 1,438 Prepaid insurance ​ 5,374 ​ 4,596 Other (1) ​ 1,698 ​ 1,821 Total prepaid expenses and other current assets ​ $ 8,749 ​ $ 7,855 ​ ​ ​ ​ ​ ​ ​ 1) No single item included within other prepaid expenses and other current assets exceeded 5.0% of our total current assets.

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
INTANGIBLE ASSETS
Schedule of intangible assets and amortization expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Amortization ​ ​ ​ ​ ​ ​ ​ ​ period ​ Gross ​ Accumulated ​ Net intangible ​ (years) ​ Amount ​ Amortization ​ assets ​ ​ (dollars in thousands) Trade name ​ indefinite ​ $ 5,000 ​ $ — ​ $ 5,000 Customer relationships ​ 10 ​ 12,900 ​ 2,795 ​ 10,105 Total intangible assets ​ ​ $ 17,900 ​ $ 2,795 ​ $ 15,105 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ ​ Amortization ​ ​ ​ ​ ​ ​ ​ ​ period ​ Gross ​ Accumulated ​ Net intangible ​ (years) ​ Amount ​ Amortization ​ assets ​ ​ (dollars in thousands) Trade name ​ indefinite ​ $ 5,000 ​ $ — ​ $ 5,000 Non-compete agreement ​ 2 ​ 140 ​ 71 ​ 69 Customer relationships ​ 10 ​ 12,900 ​ 1,516 ​ 11,384 Total intangible assets ​ ​ $ 18,040 ​ $ 1,587 ​ $ 16,453 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of expected remaining amortization	​ ​ ​ ​ ​ ​ ​ (in thousands) 2021 ​ $ 1,290 2022 ​ 1,290 2023 ​ 1,290 2024 ​ 1,290 2025 ​ ​ 1,290 Thereafter ​ 3,655 Total ​ $ 10,105 ​ ​ ​ ​

ACCRUED EXPENSES (Tables)

ACCRUED EXPENSES (Tables)	12 Months Ended
	Dec. 31, 2020
ACCRUED EXPENSES
Schedule of accrued expenses	Accrued expenses consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 2019 ​ ​ (in thousands) Salaries, wages and employee benefits ​ $ 6,142 ​ $ 3,668 Federal and state tax accruals ​ 2,649 ​ 1,648 Other (1) ​ 2,007 ​ 1,202 Total accrued expenses ​ $ 10,798 ​ $ 6,518 ​ ​ ​ ​ ​ ​ ​ 1) No single item included within other accrued expenses exceeded 5.0% of our total current liabilities.

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2020
LONG-TERM DEBT
Schedule of long-term debt instruments	Long-term debt consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Revolving credit agreement ​ $ 73,025 ​ $ 73,225 Sale-leaseback finance obligations ​ ​ 9,913 ​ ​ 11,783 Insurance premium financing (2019) ​ ​ — ​ ​ 4,506 Insurance premium financing (2020) ​ ​ 5,064 ​ ​ — Other ​ ​ 141 ​ ​ — ​ ​ ​ 88,143 ​ ​ 89,514 Less current maturities ​ ​ (6,791) ​ ​ (6,165) Total long-term debt ​ $ 81,352 ​ $ 83,349 ​ ​ ​ ​ ​ ​ ​

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2020
LEASES
Schedule of lease expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended ​ ​ December 31, ​ 2020 2019 ​ ​ (in thousands) Operating lease costs ​ $ 8,069 ​ $ 9,185 Finance lease costs: ​ ​ ​ ​ ​ ​ Amortization of assets ​ 20,555 ​ 13,711 Interest on lease liabilities ​ 3,264 ​ 2,521 Total finance lease costs ​ 23,819 ​ 16,232 Variable and short-term lease costs ​ 2,066 ​ 989 Total lease costs ​ $ 33,954 ​ $ 26,406 ​ ​ ​ ​ ​ ​ ​
Schedule of supplemental balance sheet information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ December 31, 2019 Operating leases: ​ (dollars in thousands) Operating leases - right-of-use assets ​ $ 28,154 $ 11,775 ​ ​ ​ ​ ​ ​ ​ ​ ​ Current operating lease obligations ​ 6,838 ​ 6,050 Long-term operating lease obligations ​ 21,690 ​ 5,812 Total operating lease liabilities ​ $ 28,528 ​ $ 11,862 ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance leases: ​ ​ ​ ​ ​ ​ ​ Property and equipment, at cost ​ 86,281 ​ 120,236 Accumulated amortization ​ (22,991) ​ (30,990) Property and equipment, net ​ $ 63,290 ​ $ 89,246 ​ ​ ​ ​ ​ ​ ​ ​ ​ Current finance lease obligations ​ 11,655 ​ 30,779 Long-term finance lease obligations ​ 54,482 ​ 58,397 ​ ​ $ 66,137 ​ $ 89,176 ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average remaining lease term: ​ (in months) ​ (in months) Operating leases ​ 60 ​ 45 Finance leases ​ 43 ​ 44 ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average discount rate: ​ ​ ​ ​ ​ ​ ​ ​ Operating leases ​ 4.59 % ​ 4.03 % Finance leases ​ 3.73 % ​ 3.34 % ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of supplemental cash flow and other information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ December 31, 2019 Cash paid for amounts included in measurement of liabilities: ​ (in thousands) Operating cash flows from operating leases ​ $ 287 ​ $ 87 Operating cash flows from finance leases ​ ​ 3,264 ​ ​ 2,521 Financing cash flows from finance leases ​ ​ 31,519 ​ ​ 14,016 ​ ​ ​ ​ ​ ​ ​ ROU assets obtained in exchange for lease liabilities: ​ ​ ​ ​ ​ ​ Operating leases ​ $ 23,074 ​ $ 2,319 Finance leases ​ ​ 8,481 ​ ​ 32,440 ​ ​ ​ ​ ​ ​ ​
Schedule of maturities of operating lease liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance Leases ​ Operating Leases ​ ​ (in thousands) 2021 ​ $ 13,894 ​ $ 7,004 2022 ​ ​ 13,894 ​ ​ 6,456 2023 ​ ​ 24,711 ​ ​ 6,192 2024 ​ ​ 15,256 ​ ​ 5,918 2025 ​ ​ 4,187 ​ ​ 5,049 Thereafter ​ ​ 75 ​ ​ 1,321 Total lease payments ​ ​ 72,017 ​ ​ 31,940 Less: Imputed interest ​ ​ (5,880) ​ ​ (3,412) Total lease obligations ​ ​ 66,137 ​ ​ 28,528 Less: Current obligations ​ ​ (11,655) ​ ​ (6,838) Long-term lease obligations ​ $ 54,482 ​ $ 21,690 ​ ​ ​ ​ ​ ​ ​
Schedule of maturities of finance lease liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance Leases ​ Operating Leases ​ ​ (in thousands) 2021 ​ $ 13,894 ​ $ 7,004 2022 ​ ​ 13,894 ​ ​ 6,456 2023 ​ ​ 24,711 ​ ​ 6,192 2024 ​ ​ 15,256 ​ ​ 5,918 2025 ​ ​ 4,187 ​ ​ 5,049 Thereafter ​ ​ 75 ​ ​ 1,321 Total lease payments ​ ​ 72,017 ​ ​ 31,940 Less: Imputed interest ​ ​ (5,880) ​ ​ (3,412) Total lease obligations ​ ​ 66,137 ​ ​ 28,528 Less: Current obligations ​ ​ (11,655) ​ ​ (6,838) Long-term lease obligations ​ $ 54,482 ​ $ 21,690 ​ ​ ​ ​ ​ ​ ​

FEDERAL AND STATE INCOME TAXES

FEDERAL AND STATE INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2020
FEDERAL AND STATE INCOME TAXES
Schedule of Deferred Tax Assets and Liabilities	Significant components of the Company’s deferred tax assets and liabilities are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Deferred tax assets: ​ (in thousands) Operating lease liabilities ​ $ 7,170 ​ $ 2,981 Accrued expenses not deductible until paid ​ ​ 6,105 ​ ​ 5,215 Goodwill and intangible assets ​ 1,264 ​ 1,426 Finance lease obligations ​ ​ 794 ​ ​ 287 Net operating loss carry forwards ​ 298 ​ 1,643 Revenue recognition ​ 238 ​ 201 Allowance for doubtful accounts ​ 225 ​ 168 Equity incentive compensation ​ 204 ​ 188 Other ​ 5 ​ 60 Total deferred tax assets ​ $ 16,303 ​ $ 12,169 ​ ​ ​ ​ ​ ​ ​ Deferred tax liabilitie ​ ​ Tax over book depreciation ​ $ (30,315) ​ $ (30,941) Operating leases - right of use assets ​ ​ (7,075) ​ ​ (2,959) Prepaid expenses deductible when paid ​ (2,327) ​ (2,095) Other ​ ​ — ​ ​ (191) Total deferred tax liabilities ​ (39,717) ​ (36,186) Net deferred tax liabilities ​ $ (23,414) ​ $ (24,017)
Schedule of Components of Income Tax Expense (Benefit)	Significant components of the provision (benefit) for income taxes are as follows: ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Current: ​ (in thousands) Federal ​ $ 2,410 ​ $ (637) State ​ 211 ​ 173 Total current ​ 2,621 ​ (464) Deferred: ​ ​ Federal ​ (765) ​ 194 State ​ 353 ​ 114 Total deferred ​ (412) ​ 308 Total income tax expense (benefit) ​ $ 2,209 ​ $ (156)
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation between the effective income tax rate and the statutory federal income tax rate of 21% is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2020 2019 ​ ​ (dollars in thousands) Income tax expense (benefit) at statutory federal rate ​ $ 1,461 ​ $ (1,019) ​ Federal income tax effects of: ​ ​ ​ ​ ​ State income tax benefit ​ (44) ​ (36) ​ Per diem and other nondeductible meals and entertainment ​ 378 ​ 388 ​ Taxes related to prior years ​ ​ 346 ​ ​ — ​ Non-deductible compensation ​ ​ 219 ​ ​ 271 ​ Loss carryback rate benefit ​ ​ (628) ​ ​ — ​ Other ​ (87) ​ (46) ​ Federal income tax expense (benefit) ​ 1,645 ​ (442) ​ State income tax expense ​ 564 ​ 286 ​ Total income tax expense (benefit) ​ $ 2,209 ​ $ (156) ​ ​ ​ ​ ​ ​ ​ ​ ​ Effective tax rate ​ 31.8 % 3.2 %

EQUITY COMPENSATION AND EMPLO_2

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2020
EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Stock options ​ $ 268 ​ $ 299 Restricted stock awards ​ 1,537 ​ 1,415 Equity compensation expense ​ $ 1,805 ​ $ 1,714
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- Weighted- Aggregate ​ ​ ​ ​ Average ​ Average ​ Intrinsic ​ ​ ​ ​ Exercise ​ Remaining ​ Value (in ​ ​ Number of ​ Price Per ​ Contractual ​ thousands) ​ ​ Shares ​ Share ​ Life (in years) ​ (1) Options outstanding at December 31, 2019 154,223 ​ $ 17.72 9.17 ​ $ — Granted (2) — ​ — — ​ — Exercised — ​ — — ​ — Cancelled/forfeited (33,367) ​ 17.75 — ​ — Expired (11,123) ​ 17.75 — ​ — Outstanding at December 31, 2020 (3) 109,733 ​ $ 17.71 8.16 ​ $ — Exercisable at December 31, 2020 27,429 ​ $ 17.71 8.16 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1) The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price of the option. The per share market value of the Company’s common stock, as determined by the closing price on December 31, 2020 was $8.93 . 2) The weighted-average grant date fair value of options granted during 2019 was $9.12 . 3) The exercise prices of outstanding options granted range from $13.54 to $17.75 as of December 31, 2020.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	Information related to the restricted stock awarded for the years ended December 31, 2020 and 2019 is as follows: ​ ​ ​ ​ ​ ​ ​ Number of Weighted-Average Grant ​ ​ Shares ​ Date Fair Value (1) Nonvested shares – December 31, 2018 251,869 ​ $ 17.99 Granted 283,077 ​ 16.91 Forfeited (84,620) ​ 16.36 Vested (61,084) ​ 21.92 Nonvested shares – December 31, 2019 389,242 ​ $ 16.94 Granted 323,915 ​ 3.93 Forfeited (107,968) ​ 11.86 Vested (128,106) ​ 13.60 Nonvested shares – December 31, 2020 477,083 ​ $ 10.16 ​ ​ ​ ​ ​ ​ 1) The shares were valued at the closing price of the Company’s common stock on the date(s) specified by the award agreements.
Schedule of Stock Options and Restricted Stock Vested	The fair value of stock options and restricted stock that vested during the year is as follows for the periods indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 ​ ​ (in thousands) Stock options ​ $ 354 ​ $ — Restricted stock ​ ​ 696 ​ ​ 815 ​ ​ ​ ​ ​ ​ ​

EARNINGS (LOSS) PER SHARE (Tabl

EARNINGS (LOSS) PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2020
EARNINGS (LOSS) PER SHARE
Schedule of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted earnings (loss) per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2020 2019 Numerator: ​ (in thousands, except per share amounts) Net income (loss) ​ $ 4,746 ​ $ (4,698) Denominator: ​ ​ Denominator for basic earnings (loss) per share – weighted average shares ​ 8,775 ​ 8,525 Effect of dilutive securities: ​ ​ Employee restricted stock and incentive stock options ​ 99 ​ — Denominator for diluted earnings (loss) per share – adjusted weighted average shares and assumed conversion ​ 8,874 ​ 8,525 Basic earnings (loss) per share ​ $ 0.54 ​ $ (0.55) Diluted earnings (loss) per share ​ $ 0.53 ​ $ (0.55) Weighted average anti-dilutive employee restricted stock and incentive stock options ​ 313 ​ 433 ​ ​ ​ ​ ​ ​ ​

DESCRIPTION OF BUSINESS AND S_3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Number of reportable segments		2
Pre-tax increase in depreciation expense from a change in the Tractor Fleet salvage value percentage		$ 2,700
Restricted cash		243	$ 0
Outstanding checks		5,200	2,100
Impairment of assets held for sale		588	786
Impairment of Goodwill		0	0
Treasury stock reissued at lower than repurchase price		4,300	4,800
Contract asset		$ 1,100	$ 900
Salvage Value
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Tractor Fleet previous salvage value (as a percent)	30.00%
Tractor Fleet salvage value (as a percent)	25.00%
Minimum | Structures
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		15 years
Minimum | Transportation Equipment
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		5 years
Minimum | Other Machinery and Equipment
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		3 years
Maximum | Structures
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		40 years
Maximum | Transportation Equipment
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		14 years
Maximum | Other Machinery and Equipment
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life		10 years

DESCRIPTION OF BUSINESS AND S_4

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Allowance of Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Allowance for Doubtful Accounts Receivable
Balance at beginning of year	$ 369	$ 575
Provision for doubtful accounts	535	(145)
Uncollectible accounts written off, net of recovery	(287)	(61)
Balance at end of year	$ 617	$ 369

DESCRIPTION OF BUSINESS AND S_5

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Claims Accruals (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Cargo loss and damage claims
Claims accrual	$ 50
Bodily injury and property damage claims
Claims accrual	2,000	$ 1,000
Bodily injury and property damage claims | Skyraider Risk Retention Group Inc. ("SRRG") | Minimum
Claims accrual		1,000
Bodily injury and property damage claims | Skyraider Risk Retention Group Inc. ("SRRG") | Maximum
Claims accrual		$ 2,000
Workers' compensation claims
Claims accrual	500
Employee medical expenses
Claims accrual	$ 250

DESCRIPTION OF BUSINESS AND S_6

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue
Operating revenue	$ 551,138	$ 522,631
Freight
Disaggregation of Revenue
Operating revenue	493,889	451,176
Fuel Surcharge
Disaggregation of Revenue
Operating revenue	45,418	63,755
Accessorial
Disaggregation of Revenue
Operating revenue	11,831	7,700
Trucking
Disaggregation of Revenue
Operating revenue	381,589	375,657
USAT Logistics
Disaggregation of Revenue
Operating revenue	169,549	146,974
Operating Segments | Trucking
Disaggregation of Revenue
Operating revenue	384,256	377,093
Operating Segments | Trucking | Freight
Disaggregation of Revenue
Operating revenue	341,522	323,109
Operating Segments | Trucking | Fuel Surcharge
Disaggregation of Revenue
Operating revenue	35,049	49,059
Operating Segments | Trucking | Accessorial
Disaggregation of Revenue
Operating revenue	7,685	4,925
Operating Segments | USAT Logistics
Disaggregation of Revenue
Operating revenue	191,951	154,011
Operating Segments | USAT Logistics | Freight
Disaggregation of Revenue
Operating revenue	176,439	135,704
Operating Segments | USAT Logistics | Fuel Surcharge
Disaggregation of Revenue
Operating revenue	11,366	15,532
Operating Segments | USAT Logistics | Accessorial
Disaggregation of Revenue
Operating revenue	4,146	2,775
Intersegment Eliminations
Disaggregation of Revenue
Operating revenue	(25,069)	(8,473)
Intersegment Eliminations | Freight
Disaggregation of Revenue
Operating revenue	(24,072)	(7,637)
Intersegment Eliminations | Fuel Surcharge
Disaggregation of Revenue
Operating revenue	(997)	(836)
Intersegment Eliminations | Trucking
Disaggregation of Revenue
Operating revenue	(2,667)	(1,436)
Intersegment Eliminations | USAT Logistics
Disaggregation of Revenue
Operating revenue	$ (22,402)	$ (7,037)

SEGMENT REPORTING - Other (Deta

SEGMENT REPORTING - Other (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Number of reportable segments	2
Sales Revenue, Net | Customer Concentration Risk | Wal-Mart
Segment Reporting Information
Concentration risk, percentage	11.00%	12.00%

SEGMENT REPORTING - Segment Rep

SEGMENT REPORTING - Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Operating revenue	$ 551,138	$ 522,631
Operating income	12,858	2,315
Depreciation and amortization	41,359	37,193
Trucking
Segment Reporting Information
Operating revenue	381,589	375,657
Depreciation and amortization	40,203	36,245
USAT Logistics
Segment Reporting Information
Operating revenue	169,549	146,974
Depreciation and amortization	1,156	948
Operating Segments
Segment Reporting Information
Operating income	12,858	2,315
Operating Segments | Trucking
Segment Reporting Information
Operating revenue	384,256	377,093
Operating income	9,297	(447)
Operating Segments | USAT Logistics
Segment Reporting Information
Operating revenue	191,951	154,011
Operating income	3,561	2,762
Intersegment Eliminations
Segment Reporting Information
Operating revenue	(25,069)	(8,473)
Intersegment Eliminations | Trucking
Segment Reporting Information
Operating revenue	(2,667)	(1,436)
Intersegment Eliminations | USAT Logistics
Segment Reporting Information
Operating revenue	(22,402)	(7,037)
Foreign Countries | Operating Segments | Trucking
Segment Reporting Information
Operating revenue	$ 33,600	$ 37,000

PREPAID EXPENSES AND OTHER CU_3

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Prepaid expense and other assets	$ 8,749	$ 7,855
Prepaid licenses, permits and tolls
Prepaid expense and other assets	1,677	1,438
Prepaid insurance
Prepaid expense and other assets	5,374	4,596
Other
Prepaid expense and other assets	$ 1,698	$ 1,821

INTANGIBLE ASSETS - Schedule of

INTANGIBLE ASSETS - Schedule of Intangible Asset - Finite life (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets and Goodwill
Gross Amount	$ 17,900	$ 18,040
Accumulated Amortization	2,795	1,587
Net intangible assets	15,105	16,453
Amortization of Intangible Assets	1,300	1,400
Trade name
Intangible Assets and Goodwill
Gross Amount	5,000	5,000
Net intangible assets	$ 5,000	$ 5,000
Non-compete agreement
Intangible Assets and Goodwill
Amortization period (years)		2 years
Gross Amount		$ 140
Accumulated Amortization		71
Net intangible assets		$ 69
Customer relationships
Intangible Assets and Goodwill
Amortization period (years)	10 years	10 years
Gross Amount	$ 12,900	$ 12,900
Accumulated Amortization	2,795	1,516
Net intangible assets	$ 10,105	$ 11,384

INTANGIBLE ASSETS - Schedule _2

INTANGIBLE ASSETS - Schedule of Future Amortization (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
INTANGIBLE ASSETS
Intangible assets, weighted average useful life	94 months
2021	$ 1,290
2022	1,290
2023	1,290
2024	1,290
2025	1,290
Thereafter	3,655
Net intangible assets	$ 10,105

ACCRUED EXPENSES (Details)

ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ACCRUED EXPENSES
Salaries, wages and employee benefits	$ 6,142	$ 3,668
Federal and state tax accruals	2,649	1,648
Other	2,007	1,202
Total accrued expenses	$ 10,798	$ 6,518

LONG-TERM DEBT - Summary of Lon

LONG-TERM DEBT - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Apr. 20, 2020	Dec. 31, 2019	Jan. 31, 2019	Feb. 15, 2015
Debt Instruments
Other	$ 141
Total long-term debt, including current maturities	88,143		$ 89,514
Less current maturities	(6,791)		(6,165)
Total long-term debt	81,352		83,349
Revolving credit agreement
Debt Instruments
Total long-term debt, including current maturities	73,025	$ 170,000	73,225	$ 225,000	$ 170,000
Sale-leaseback finance obligations
Debt Instruments
Total long-term debt, including current maturities	9,913		11,783
Insurance premium financing (2019)
Debt Instruments
Total long-term debt, including current maturities			$ 4,506
Insurance premium financing (2020)
Debt Instruments
Total long-term debt, including current maturities	$ 5,064

LONG-TERM DEBT - Other (Details

LONG-TERM DEBT - Other (Details) - USD ($) $ in Thousands	Apr. 20, 2020	Jan. 31, 2019	Feb. 15, 2015	Jul. 31, 2019	Apr. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Debt Instruments
Long-term debt						$ 88,143	$ 89,514
Weighted average interest rate						2.12%
Proceeds from obligation under finance lease						$ 0	12,795
Tractors
Debt Instruments
Proceeds from obligation under finance lease				$ 2,300	$ 10,500
Finance lease contract term				5 years	5 years
Initial monthly payment in sale-leaseback transaction				$ 30	$ 100
Percentage of original cost at which Company has option to purchase at end of lease					32.50%
Sale-leaseback finance obligations
Debt Instruments
Long-term debt						9,913	11,783
Revolving credit agreement
Debt Instruments
Long-term debt	$ 170,000	$ 225,000	$ 170,000			73,025	$ 73,225
Maximum increase available subject to lender approval	75,000
Excercisable, incremental borrowing capacity	$ 20,000
Term of debt instrument	5 years	5 years	5 years
Increase (decrease) in borrowing capacity	$ 55,000
Fixed charge coverage ratio	1
Commitment fee percentage	0.25%
Borrowing based threshold, eligible noninvestment grade accounts (as a percent)	85.00%
Borrowing based threshold for eligible unbilled accounts receivable (as a percent)	85.00%
Borrowing base before additions of eligible revenue equipment	$ 10,000
Newly acquired revenue equipment (as a percent)	85.00%
Eligible revenue equipment (as a percent)	85.00%
Percentage of maximum revolver amount	10.00%
Minimum excess availability percentage of maximum revolver amount	20.00%
Remaining borrowing capacity						56,200
Letter of credit outstanding						7,900
Revolving credit agreement | Minimum
Debt Instruments
Borrowing based threshold eligible investment grade accounts receivable (as a percent)	85.00%
Revolving credit agreement | Maximum
Debt Instruments
Borrowing based threshold eligible investment grade accounts receivable (as a percent)	90.00%
Swingline sub-facility
Debt Instruments
Long-term debt	$ 25,000
Swingline sub-facility | Overnight Borrowings
Debt Instruments
Long-term line of credit						$ 100
Letter of credit sub-facility
Debt Instruments
Long-term debt	$ 15,000
Base Rate | Revolving credit agreement | Minimum
Debt Instruments
Basis spread on variable rate (as a percent)	0.25%
Base Rate | Revolving credit agreement | Maximum
Debt Instruments
Basis spread on variable rate (as a percent)	0.75%
London Interbank Offered Rate (LIBOR) | Revolving credit agreement | Minimum
Debt Instruments
Basis spread on variable rate (as a percent)	1.25%
London Interbank Offered Rate (LIBOR) | Revolving credit agreement | Maximum
Debt Instruments
Basis spread on variable rate (as a percent)	1.75%
Insurance Premiums Financing Note
Debt Instruments
Accrued Premium Insurance Payable								$ 5,100	$ 4,500

LEASES - Components of Lease Ex

LEASES - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
LEASES
Operating lease costs	$ 8,069	$ 9,185
Finance lease costs:
Amortization of assets	20,555	13,711
Interest on lease liabilities	3,264	2,521
Total finance lease costs	23,819	16,232
Variable and short-term lease costs	2,066	989
Total lease costs	$ 33,954	$ 26,406

LEASES - Supplemental Balance S

LEASES - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating leases:
Operating leases - right of use assets	$ 28,154	$ 11,775
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Operating leases - right of use assets	Operating leases - right of use assets
Current operating lease obligations	$ 6,838	$ 6,050
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current operating lease obligations	Current operating lease obligations
Long-term operating lease obligations	$ 21,690	$ 5,812
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term operating lease obligations	Long-term operating lease obligations
Total operating lease liabilities	$ 28,528	$ 11,862
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiabilityCurrent us-gaap:OperatingLeaseLiabilityNoncurrent	us-gaap:OperatingLeaseLiabilityCurrent us-gaap:OperatingLeaseLiabilityNoncurrent
Finance leases:
Property and equipment, at cost	$ 86,281	$ 120,236
Accumulated amortization	(22,991)	(30,990)
Property and equipment, net	63,290	89,246
Current finance lease obligations	$ 11,655	$ 30,779
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current finance lease obligations	Current finance lease obligations
Long-term finance lease obligations	$ 54,482	$ 58,397
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term finance lease obligations	Long-term finance lease obligations
Total lease obligations	$ 66,137	$ 89,176
Finance Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:FinanceLeaseLiabilityCurrent us-gaap:FinanceLeaseLiabilityNoncurrent	us-gaap:FinanceLeaseLiabilityCurrent us-gaap:FinanceLeaseLiabilityNoncurrent
Weighted average remaining lease term:
Operating leases	60 months	45 months
Finance leases	43 months	44 months
Weighted average discount rate:
Operating leases	4.59%	4.03%
Finance leases	3.73%	3.34%

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 287	$ 87
Operating cash flows from finance leases	3,264	2,521
Financing cash flows from finance leases	31,519	14,016
ROU assets obtained in exchange for lease liabilities:
Operating leases	23,074	2,319
Finance leases	$ 8,481	$ 32,440

LEASES - Maturities of Lease Li

LEASES - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finance Leases
2021	$ 13,894
2022	13,894
2023	24,711
2024	15,256
2025	4,187
Thereafter	75
Total lease payments	72,017
Less: Imputed interest	(5,880)
Total lease obligations	66,137	$ 89,176
Less: Current obligations	(11,655)	(30,779)
Long-term finance lease obligations	54,482	58,397
Operating Leases
2021	7,004
2022	6,456
2023	6,192
2024	5,918
2025	5,049
Thereafter	1,321
Total lease payments	31,940
Less: Imputed interest	(3,412)
Total operating lease liabilities	28,528	11,862
Less: Current obligations	(6,838)	(6,050)
Long-term operating lease obligations	$ 21,690	$ 5,812

LEASES - Other (Details)

LEASES - Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
LEASES
Lease rent expense	$ 0.2	$ 0.2

FEDERAL AND STATE INCOME TAXE_2

FEDERAL AND STATE INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
FEDERAL AND STATE INCOME TAXES
Operating lease liabilities	$ 7,170	$ 2,981
Accrued expenses not deductible until paid	6,105	5,215
Goodwill and intangible assets	1,264	1,426
Finance lease obligations	794	287
Net operating loss carry forwards	298	1,643
Revenue recognition	238	201
Allowance for doubtful accounts	225	168
Equity incentive compensation	204	188
Other	5	60
Total deferred tax assets	16,303	12,169
Deferred tax liabilities:
Tax over book depreciation	(30,315)	(30,941)
Operating leases - right of use assets	(7,075)	(2,959)
Prepaid expenses deductible when paid	(2,327)	(2,095)
Other		(191)
Total deferred tax liabilities	(39,717)	(36,186)
Net deferred tax liabilities	$ (23,414)	$ (24,017)

FEDERAL AND STATE INCOME TAXE_3

FEDERAL AND STATE INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 2,410	$ (637)
State	211	173
Total current	2,621	(464)
Deferred:
Federal	(765)	194
State	353	114
Total deferred	(412)	308
Total income tax expense (benefit)	$ 2,209	$ (156)

FEDERAL AND STATE INCOME TAXE_4

FEDERAL AND STATE INCOME TAXES - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FEDERAL AND STATE INCOME TAXES
Income tax expense (benefit) at statutory federal rate	$ 1,461	$ (1,019)
Federal income tax effects of:
State income tax benefit	(44)	(36)
Per diem and other nondeductible meals and entertainment	378	388
Taxes related to prior years	346	0
Non-deductible compensation	219	271
Loss carryback rate benefit	(628)	0
Other	(87)	(46)
Federal income tax expense (benefit)	1,645	(442)
State income tax expense	564	286
Total income tax expense (benefit)	$ 2,209	$ (156)
Effective income tax rate reconciliation percent	31.80%	3.20%

FEDERAL AND STATE INCOME TAXE_5

FEDERAL AND STATE INCOME TAXES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards
Effective income tax rate reconciliation at federal statutory income tax rate, percent	21.00%	21.00%
State and Local Jurisdiction
Operating Loss Carryforwards
Operating loss carryovers	$ 0.3

EQUITY COMPENSATION AND EMPLO_3

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	May 31, 2019	May 31, 2017	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure
Share price			$ 8.93
Employer matching contribution (as a percent)			50.00%
Employer matching contribution as a percentage of employees' gross pay			4.00%
Employer matching contribution, vesting term			2 years
Employer discretionary contribution amount			$ 0.6	$ 0.7
Employee Stock Option | Minimum
Defined Benefit Plan Disclosure
Vesting period			3 years
Expiration period			3 years
Employee Stock Option | Maximum
Defined Benefit Plan Disclosure
Vesting period			4 years
Expiration period			10 years
Restricted Stock
Defined Benefit Plan Disclosure
Vesting period			2 years
Unrecognized compensation cost related to unvested restricted stock awards			$ 2.1
Recognition period			2 years 2 months 12 days
Restricted Stock | Minimum
Defined Benefit Plan Disclosure
Vesting period			3 years
Restricted Stock | Maximum
Defined Benefit Plan Disclosure
Vesting period			4 years
Omnibus Incentive Plan (the "Incentive Plan")
Defined Benefit Plan Disclosure
Number of additional shares authorized (in shares)	500,000	500,000
Number of shares available for grant (in shares)			513,343
Number of options outstanding			109,733	154,223
Recognition period			2 years 2 months 12 days
Omnibus Incentive Plan (the "Incentive Plan") | Maximum
Defined Benefit Plan Disclosure
Number of shares authorized (in shares)			500,000

EQUITY COMPENSATION AND EMPLO_4

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS - Recognized Compensation Expense (Details) - Omnibus 2014 Incentive Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 1,805	$ 1,714
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	268	299
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 1,537	$ 1,415

EQUITY COMPENSATION AND EMPLO_5

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Stock Option Activity, Additional Disclosures
Share Price			$ 8.93
Weighted-average grant date fair value of options granted		$ 9.12
Omnibus Incentive Plan (the "Incentive Plan")
Stock Option Activity Under the Incentive Plan
Options outstanding at December 31, 2019	154,223
Granted (in shares)	0
Exercised (in shares)	0
Cancelled/forfeited (in shares)	33,367
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	(11,123)
Outstanding at December 31, 2020	109,733	154,223
Stock Options Weighted Average Exercise Price
Options outstanding, weighted average exercise price per share - December 31, 2019 (in USD per share)	$ 17.72
Options granted, weighted average exercise price per share (in USD per share)	0
Options exercised, weighted average exercise price per share (in USD per share)	0
Options cancelled/forfeited, weighted average exercise price per share (in USD per share)	17.75
Options expired, weighted average exercise price per share (in usd per share)	17.75
Options outstanding, weighted average exercise price per share - December 31, 2020 (in USD per share)	$ 17.71	$ 17.72
Stock Option Activity, Additional Disclosures
Options outstanding weighted average remaining contractual life (in years)		9 years 2 months 1 day
Options exercisable, number of options (in shares)			27,429
Option exercisable, weighted average exercise price per share (in USD per share)			$ 17.71
Option exercisable, weighted average remaining contractual life (in years)	8 years 1 month 28 days
Options outstanding, aggregate intrinsic value			$ 0
Options exercisable, aggregate intrinsic value			$ 0
Exercise prices of outstanding options granted	$ 17.71	$ 17.72	$ 17.71
Unrecognized compensation cost related to nonvested stock options			$ 500
Recognition period	2 years 2 months 12 days
Omnibus Incentive Plan (the "Incentive Plan") | Minimum
Stock Options Weighted Average Exercise Price
Options outstanding, weighted average exercise price per share - December 31, 2020 (in USD per share)	$ 13.54
Stock Option Activity, Additional Disclosures
Exercise prices of outstanding options granted	13.54		$ 13.54
Omnibus Incentive Plan (the "Incentive Plan") | Maximum
Stock Options Weighted Average Exercise Price
Options outstanding, weighted average exercise price per share - December 31, 2020 (in USD per share)	17.75
Stock Option Activity, Additional Disclosures
Exercise prices of outstanding options granted	$ 17.75		$ 17.75

EQUITY COMPENSATION AND EMPLO_6

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS - Restricted Stock Awards (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Number of Shares
Number of shares nonvested (in shares)	389,242	251,869
Granted (in shares)	323,915	283,077
Forfeited (in shares)	(107,968)	(84,620)
Vested (in shares)	(128,106)	(61,084)
Number of shares nonvested (in shares)	477,083	389,242
Weighted-Average Grant Date Fair Value
Number of shares nonvested, weighted-average grant date fair value (in usd per share)	$ 16.94	$ 17.99
Granted (in usd per share)	3.93	16.91
Forfeited (in usd per share)	11.86	16.36
Vested (in usd per share)	13.60	21.92
Number of shares nonvested, weighted-average grant date fair value (in usd per share)	$ 10.16	$ 16.94

EQUITY COMPENSATION AND EMPLO_7

EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS - Fair Value of Stock Options and Restricted Stock Vested (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
EQUITY COMPENSATION AND EMPLOYEE BENEFIT PLANS
Stock options	$ 354
Restricted stock	$ 696	$ 815

EARNINGS (LOSS) PER SHARE - Com

EARNINGS (LOSS) PER SHARE - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
EARNINGS (LOSS) PER SHARE
Net income (loss)	$ 4,746	$ (4,698)
Denominator:
Denominator for basic earnings (loss) per share - weighted average shares	8,775	8,525
Effect of dilutive securities:
Employee restricted stock and incentive stock options	99	0
Denominator for diluted earnings (loss) per share - adjusted weighted average shares and assumed conversion (in shares)	8,874	8,525
Basic earnings (loss) per share (in dollars per share)	$ 0.54	$ (0.55)
Diluted earnings (loss) per share (in dollars per share)	$ 0.53	$ (0.55)
Weighted average anti-dilutive employee restricted stock and incentive stock options (in shares)	313	433

LONG-LIVED ASSET IMPAIRMENT (De

LONG-LIVED ASSET IMPAIRMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Long-lived asset impairment
Asset impairments	$ 588	$ 786
Older model year tractors
Long-lived asset impairment
Asset impairments	500
Van Buren, AR Terminal
Long-lived asset impairment
Asset impairments	$ 100
Tractors
Long-lived asset impairment
Asset impairments		$ 800