CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Operating activities:
Net income	$ 13,111	$ 3,597
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,024	9,570
Bad debt (benefit) expense	(205)
Deferred income tax benefit, net	(402)	(984)
Stock-based compensation	748	168
(Gain) loss on disposal of assets, net	(6,401)	(177)
Other	165	4
Changes in operating assets and liabilities:
Accounts and other receivables	(9,484)	(18,089)
Inventories and prepaid expenses	1,100	(82)
Accounts payable and accrued expenses	9,465	14,431
Insurance and claims accruals	(75)	878
Other long-term assets and liabilities	(2,233)	(3,332)
Net cash provided by operating activities	13,813	5,984
Investing activities:
Capital expenditures	(754)	(395)
Proceeds from sale of property and equipment	12,002	5,451
Net cash used in investing activities	11,248	5,056
Financing activities:
Borrowings under long-term debt	6,000	13,150
Payments on long-term debt	(49,321)	(16,169)
Principal payments on financing lease obligations	(2,508)	(2,992)
Payment of debt issuance costs	(774)
Net change in bank drafts payable	(111)	(2,429)
Proceeds from issuance of long-term debt	41,974
Proceeds from capital sale leaseback			$ 24,500
Net payments for tax withholdings for vested stock-based awards	(1,080)	(5)
Net cash used in financing activities	(5,820)	(8,445)
Increase in cash and restricted cash	19,241	2,595
Cash and restricted cash:
Beginning of period	1,352	325	325
End of period	20,593	2,920	$ 1,352
Supplemental disclosure of cash flow information:
Interest	1,303	$ 1,059
Income taxes, net of refunds	21
Supplemental disclosure of non-cash investing:
Purchase of revenue equipment included in accounts payable	$ 430