Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 1,502	$ 3,579
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,943	14,657
Deferred income tax, net	774	(2,862)
Share-based compensation	1,294	168
Gain on disposal of assets, net	(4)	(564)
Impairment of assets held for sale	367	0
Reversal of restructuring, impairment and other costs	0	(639)
Other	127	(324)
Changes in operating assets and liabilities:
Accounts and other receivables	(6,423)	(7,398)
Inventories and prepaid expenses	2,930	813
Accounts payable and accrued liabilities	(809)	9,472
Insurance and claims accruals	(1,220)	1,410
Other long-term assets and liabilities	(727)	116
Net cash provided by operating activities	15,754	18,428
Investing activities:
Acquisition of Davis Transfer Company (net of cash)	(305)	0
Capital expenditures	(25,209)	(4,288)
Proceeds from sale of property and equipment	7,643	2,766
Net cash used in investing activities	(17,871)	(1,522)
Financing activities:
Borrowings under long-term debt	53,700	17,478
Payments on long-term debt	(55,249)	(26,538)
Proceeds from obligation under finance lease	10,471	0
Payments on obligation under finance lease	(219)
Payments on obligation under finance lease	(6,375)	(8,137)
Payment of debt issuance costs	(538)	0
Net change in bank drafts payable	(391)	359
Net payments for tax withholdings for vested stock-based awards	(73)	(110)
Net cash provided by (used in) financing activities	1,326	(16,948)
Decrease in cash	(791)	(42)
Cash:
Beginning of period	989	71
End of period	198	29
Supplemental disclosure of cash flow information:
Interest	2,986	1,681
Income taxes	$ 998	$ 2,413