Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income from continuing operations	$ 3,824	$ 23,543
Adjustments to reconcile net income from continuing operations to cash provided by (used in) operating activities:
Deferred income taxes	526	(8,653)
Depreciation	6,049	5,838
Amortization	4,397	4,271
Equity in income of nonconsolidated investments	(5)	0
Loss on sales and disposals of property, plant, and equipment	30	0
Stock-based compensation	1,800	1,842
Gain on asset divestiture	(2,741)	0
Change in operating assets and liabilities:
Accounts receivable	(6,384)	12,099
Inventories	(12,665)	529
Other current assets	(1,245)	(1,527)
Prepaid income tax	776	(9,241)
Other noncurrent assets	2,063	(3,393)
Accounts payable	(892)	(3,739)
Deferred revenue	6,046	(575)
Accrued payroll and employee benefits	852	(4,012)
Accrued settlement	(4,000)	(4,000)
Other current liabilities	(3,461)	(106)
Other long-term liabilities	(1,780)	3,325
Net cash (used in) provided by continuing operating activities	(6,810)	16,201
Net cash used in discontinued operating activities	(253)	(2,921)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	0	12
Capital expenditures on property, plant, and equipment	(3,568)	(7,650)
Proceeds from asset divestiture	22,707	0
Acquisition	(229)	(1,050)
Net cash provided by (used in) continuing investing activities	18,910	(8,688)
Net cash provided by discontinued investing activities	0	2,278
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(147,224)	(134,155)
Proceeds from debt	134,705	125,122
Debt issuance costs	(358)	(454)
Treasury stock acquisitions	(549)	(1,660)
Investment of noncontrolling interest	396	0
Net cash used in continuing financing activities	(13,030)	(11,147)
Net cash used in discontinued financing activities	0	(19)
Effect of exchange rate changes on cash and cash equivalents	24	(571)
Net decrease in cash and cash equivalents	(1,159)	(4,867)
Cash and cash equivalents at beginning of period	7,564	14,178
Cash and cash equivalents at end of period	6,405	9,311
Supplemental disclosure of cash flow information:
Interest paid	2,205	2,453
Income taxes paid	$ 1,215	$ 2,330