Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 16,318	$ 9,984
Adjustments to reconcile net income to cash provided by operating activities:
Deferred income taxes	(541)	(1,477)
Depreciation	8,295	8,685
Amortization	5,046	5,322
Equity in (income) loss of nonconsolidated investments	(29)	7
(Gain) loss on sales and disposals of property, plant, and equipment	(4)	498
Stock-based compensation	2,910	2,838
Change in operating assets and liabilities:
Accounts receivable	910	(10,634)
Inventories	(4,957)	(12,960)
Other current assets	480	(1,160)
Prepaid income tax	(4,042)	(3,025)
Other noncurrent assets	(425)	1,132
Accounts payable	(4,193)	19,604
Deferred revenue	2,143	2,278
Accrued payroll and employee benefits	(574)	(778)
Accrued settlement	(6,000)	0
Other current liabilities	(1,041)	2,287
Other long-term liabilities	(1,013)	(176)
Net cash provided by operating activities	13,283	22,425
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	253	2,267
Capital expenditures on property, plant, and equipment	(5,037)	(3,196)
Proceeds from sale of equity method investment	0	3,875
Repayment of revolving line of credit from equity method investment	0	1,235
Net cash (used in) provided by investing activities	(4,784)	4,181
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(156,944)	(153,089)
Proceeds from debt	154,961	99,592
Debt issuance costs	(836)	0
Treasury stock acquisitions	(600)	(316)
Net cash used in financing activities	(3,419)	(53,813)
Effect of exchange rate changes on cash and cash equivalents	12	(885)
Net increase (decrease) in cash and cash equivalents	5,092	(28,092)
Cash and cash equivalents at beginning of period	10,282	37,678
Cash and cash equivalents at end of period	15,374	9,586
Supplemental disclosure of cash flow information:
Interest paid	3,599	4,468
Income taxes paid	$ 6,176	$ 4,077