Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 13,254	$ 3,576
Adjustments to reconcile net income to cash (used in) provided by operating activities:
Deferred income taxes	(401)	(1,395)
Depreciation	5,540	5,882
Amortization	3,391	3,560
Equity in (gain) loss of nonconsolidated investments	(21)	3
(Gain) loss on sales and disposals of property, plant, and equipment	(7)	394
Stock-based compensation	2,034	1,904
Change in operating assets and liabilities:
Accounts receivable	(12,402)	(20,060)
Inventories	(9,842)	(5,251)
Other current assets	(612)	(2,228)
Prepaid income tax	(3,077)	(1,823)
Other noncurrent assets	(490)	460
Accounts payable	895	21,574
Deferred revenue	1,940	2,110
Accrued payroll and employee benefits	(2,487)	(1,831)
Accrued settlement	(4,000)	0
Other current liabilities	(1,933)	1,145
Other long-term liabilities	(1,211)	(118)
Net cash (used in) provided by operating activities	(9,429)	7,902
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	76	2,086
Capital expenditures on property, plant, and equipment	(3,848)	(1,816)
Net cash (used in) provided by investing activities	(3,772)	270
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(97,269)	(99,925)
Proceeds from debt	113,402	68,995
Debt issuance costs	(836)	0
Treasury stock acquisitions	(591)	(310)
Net cash provided by (used in) financing activities	14,706	(31,240)
Effect of exchange rate changes on cash and cash equivalents	214	(1,339)
Net increase (decrease) in cash and cash equivalents	1,719	(24,407)
Cash and cash equivalents at beginning of period	10,282	37,678
Cash and cash equivalents at end of period	12,001	13,271
Supplemental disclosure of cash flow information:
Interest paid	2,492	3,347
Income taxes paid	$ 5,395	$ 3,304