Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income (loss)	$ 3,579	$ (7,736)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	14,657	14,523
Deferred income tax, net	(2,862)	(6,196)
Share-based compensation	168	152
Gain on disposal of assets, net	(564)	(337)
Reversal of previously recorded restructuring, impairment and other costs	(639)
Other	(324)	(70)
Changes in operating assets and liabilities:
Accounts receivable	(7,398)	944
Inventories and prepaid expenses	813	1,660
Accounts payable and accrued liabilities	9,472	3,328
Insurance and claims accruals	1,410	3,075
Other long-term assets and liabilities	116	119
Net cash provided by operating activities	18,428	9,462
Investing activities:
Capital expenditures	(4,288)	(3,468)
Proceeds from sale of property and equipment	2,766	9,856
Proceeds from operating sale leaseback		10,980
Net cash (used in) provided by investing activities	(1,522)	17,368
Financing activities:
Borrowings under long-term debt	17,478	11,855
Payments on long-term debt	(26,538)	(30,996)
Payments on capitalized lease obligations	(8,137)	(5,467)
Net change in bank drafts payable	359	(2,136)
Net payments for tax withholdings for vested stock-based awards	(110)	15
Issuance of treasury stock		(57)
Net cash used in financing activities	(16,948)	(26,786)
(Decrease) increase in cash	(42)	44
Cash:
Beginning of period	71	122
End of period	29	166
Supplemental disclosure of cash flow information:
Interest	1,681	1,936
Income taxes	$ 2,413	$ 124