Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (1,866)	$ 3,690
Adjustments to reconcile net (loss) income to cash used in operating activities:
Deferred income taxes	(58)	(166)
Depreciation	2,707	2,772
Amortization	1,463	1,712
Equity in income of nonconsolidated investments	0	(21)
Loss on sales and disposals of property, plant, and equipment	15	0
Stock-based compensation	680	855
Change in operating assets and liabilities:
Accounts receivable	(363)	(13,166)
Inventories	3,577	(17,463)
Other current assets	(3,928)	(1,961)
Prepaid income tax	(2,258)	(108)
Other noncurrent assets	(4,939)	591
Accounts payable	532	12,653
Deferred revenue	2,262	7,542
Accrued payroll and employee benefits	(6,094)	(5,438)
Accrued settlement	0	(2,000)
Other current liabilities	(3,124)	(2,305)
Other long-term liabilities	4,504	(733)
Net cash used in operating activities	(6,890)	(13,546)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	1	59
Capital expenditures on property, plant, and equipment	(4,444)	(2,572)
Net cash used in investing activities	(4,443)	(2,513)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(39,360)	(43,414)
Proceeds from debt	45,362	58,614
Treasury stock acquisitions	(1,657)	(526)
Net cash provided by financing activities	4,345	14,674
Effect of exchange rate changes on cash and cash equivalents	(772)	142
Net decrease in cash and cash equivalents	(7,760)	(1,243)
Cash and cash equivalents at beginning of period	14,178	10,282
Cash and cash equivalents at end of period	6,418	9,039
Supplemental disclosure of cash flow information:
Interest paid	807	1,179
Income taxes paid	$ 1,173	$ 904