Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities
Net loss	$ (2,113)	$ (6,245)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation	618	2,046
Depreciation	15,601	15,662
Amortization of intangible assets	613	546
Deferred financing cost amortization	1,864	1,810
Foreign exchange loss on revaluation of debt	425	534
Deferred taxes	(742)	312
Asset impairment	0	55
Gain on disposition of property and equipment	(73)	(85)
Loss on extinguishment of debt	0	32
Provision for doubtful accounts	257	142
Change in assets and liabilities which (used) provided cash:
Accounts receivable	(8,863)	(5,400)
Inventories	(957)	(3,213)
Prepaid expenses	(2,521)	(441)
Other current assets	69	(1,179)
Accounts payable and accrued expenses	6,115	528
Deferred and other long-term liabilities	(1,646)	(2,106)
Net cash provided by operating activities	8,647	2,998
Investing activities
Capital expenditures	(4,928)	(8,517)
Proceeds from disposals of property and equipment	459	290
Net cash used in investing activities	(4,469)	(8,227)
Financing activities
Proceeds from borrowings	41,625	66,578
Principal payments on debt	(44,782)	(59,282)
Payment of financing fees	0	(393)
Payment of obligations under capital leases	(2,670)	(2,794)
Employee taxes paid on equity awards	(59)	(832)
Net cash (used in) provided by financing activities	(5,886)	3,277
Effect of exchange rate changes on cash flows	(763)	203
Net decrease in cash	(2,471)	(1,749)
Cash and cash equivalents at beginning of period	17,253	12,808
Cash and cash equivalents at end of period	$ 14,782	$ 11,059