CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net (loss) income	$ (2,551)	$ 1,501
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	10,011	8,818
Deferred income tax, net	1,752	945
Share-based compensation	471	589
Loss (gain) on disposal of assets, net	38	(145)
Other	33	139
Changes in operating assets and liabilities:
Accounts and other receivables	(6,600)	(4,942)
Inventories and prepaid expenses	(917)	(403)
Accounts payable and accrued liabilities	109	754
Insurance and claims accruals	(594)	1,418
Other long-term assets and liabilities	581	(710)
Net cash provided by operating activities	2,333	7,964
Investing activities:
Acquisition of Davis Transfer Company (net of cash)		(305)
Capital expenditures	(11,137)	(17,041)
Proceeds from sale of property and equipment	1,036	5,858
Net cash used in investing activities	(10,101)	(11,488)
Financing activities:
Borrowings under long-term debt	21,025	12,050
Payments on long-term debt	(10,425)	(6,235)
Principal payments on financing lease obligations	(4,150)	(3,110)
Net change in bank drafts payable	1,363	486
Net payments for tax withholdings for vested stock-based awards	(57)	(72)
Net cash provided by financing activities	7,756	3,119
Decrease in cash	(12)	(405)
Cash:
Beginning of period	97	989
End of period	85	584
Supplemental disclosure of cash flow information:
Interest	1,450	1,482
Income taxes	5
Supplemental disclosure of non-cash investing:
Sales of revenue equipment included in accounts receivable	$ 1,259
Purchase of revenue equipment included in accounts payable		$ 3,214