Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,422)	$ (2,832)
Adjustments to reconcile net loss to cash provided (used) by operating activities:
Deferred income taxes	(85)	(219)
Depreciation	3,282	3,727
Amortization	1,759	3,266
Equity loss of nonconsolidated investments	200	196
Loss on sales and disposals of property, plant, and equipment	109	71
Share-based compensation	167	(252)
Income tax deficiency from share-based compensation	0	76
Change in operating assets and liabilities
Accounts receivable	(9,901)	4,274
Inventories	940	4,101
Other current assets	(1,669)	(2,095)
Prepaid income tax	2,750	(4,630)
Other noncurrent assets	236	144
Accounts payable	18,472	(9,227)
Deferred revenue	(751)	1,463
Accrued payroll and employee benefits	(1,505)	(2,968)
Other current liabilities	(805)	(31)
Other liabilities	(29)	(171)
Net cash provided (used) by operating activities	10,748	(5,107)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from the sale of property, plant, and equipment	138	97
Capital expenditures on property, plant and equipment	(3,453)	(3,125)
Loans and capital contributions to equity method investment	0	(575)
Net cash used by investing activities	(3,315)	(3,603)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(28,431)	(37,142)
Proceeds from debt	24,131	43,304
Treasury stock acquisitions	(97)	(168)
Cash dividends on common stock paid to shareholders	0	(414)
Income tax deficiency from share-based compensation	0	(76)
Net cash (used) provided by financing activities	(4,397)	5,504
Effect of exchange rate changes on cash and cash equivalents	369	777
Net increase (decrease) in cash and cash equivalents	3,405	(2,429)
Cash and cash equivalents at beginning of period	30,363	33,312
Cash and cash equivalents at end of period	33,768	30,883
Supplemental disclosure of cash flow information:
Interest paid	1,840	1,056
Income taxes (received) paid	$ (2,105)	$ 3,585