Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 7,889	$ 3,824
Adjustments to reconcile net income to cash provided (used) by operating activities:
Deferred income taxes	(1,796)	(648)
Depreciation	8,685	9,705
Amortization	5,322	5,218
Equity in loss of nonconsolidated investments	7	5
Loss (gain) on sales and disposals of property, plant, and equipment	498	(347)
Stock-based compensation	2,838	1,228
Change in operating assets and liabilities:
Accounts receivable	(10,634)	(11,899)
Inventories	(10,546)	(19,336)
Other current assets	(1,160)	(786)
Prepaid income tax	(3,025)	12,569
Other noncurrent assets	1,132	719
Accounts payable	19,604	22,017
Deferred revenue	2,278	3,339
Accrued payroll and employee benefits	(778)	2,734
Other current liabilities	2,287	(763)
Other long-term liabilities	(176)	(63)
Net cash provided by operating activities	22,425	27,516
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	2,267	1,388
Capital expenditures on property, plant, and equipment	(3,196)	(5,335)
Proceeds from sale of equity method investments	3,875	0
Repayment of revolving line of credit from equity method investment	1,235	0
Net cash provided by (used in) investing activities	4,181	(3,947)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(153,089)	(113,119)
Proceeds from debt	99,592	91,838
Treasury stock acquisitions	(316)	(103)
Net cash used in financing activities	(53,813)	(21,384)
Effect of exchange rate changes on cash and cash equivalents	(885)	2,460
Net (decrease) increase in cash and cash equivalents	(28,092)	4,645
Cash and cash equivalents at beginning of period	37,678	30,363
Cash and cash equivalents at end of period	9,586	35,008
Supplemental disclosure of cash flow information:
Interest paid	4,468	5,599
Income taxes paid (received)	$ 4,077	$ (11,233)