Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 390	$ 1,584
Adjustments to reconcile net income to cash (used in) provided by operating activities:
Deferred income taxes	(173)	(93)
Depreciation	3,814	4,008
Amortization	2,855	2,935
Equity in income of nonconsolidated investments	(87)	0
(Gain) loss on sales and disposals of property, plant, and equipment	(214)	30
Stock-based compensation	1,183	1,213
Gain on asset divestiture	(491)	0
Change in operating assets and liabilities:
Accounts receivable	(17,327)	(19,876)
Contract assets	2,190	(2,653)
Inventories	(10,695)	5,473
Other current assets	(3,573)	(650)
Other noncurrent assets	1,715	1,215
Accounts payable	9,347	10,854
Deferred revenue	5,301	10,168
Accrued payroll and employee benefits	(2,943)	(1,506)
Accrued settlement	(2,000)	(2,000)
Other current liabilities	(1,748)	(2,561)
Other long-term liabilities	(926)	(1,299)
Net cash (used in) provided by continuing operating activities	(13,382)	6,842
Net cash used in discontinued operating activities	0	(253)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	237	0
Capital expenditures on property, plant, and equipment	(3,048)	(2,248)
Proceeds from asset divestiture	1,195	0
Acquisition, net of cash acquired	(5,712)	0
Net cash used in continuing investing activities	(7,328)	(2,248)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(78,093)	(90,666)
Proceeds from debt	96,970	82,899
Treasury stock acquisitions	(401)	(547)
Investment of noncontrolling interest	0	396
Net cash provided by (used in) continuing financing activities	18,476	(7,918)
Effect of exchange rate changes on cash and cash equivalents	(477)	153
Net decrease in cash and cash equivalents	(2,711)	(3,424)
Cash and cash equivalents at beginning of period	10,372	7,564
Cash and cash equivalents at end of period	7,661	4,140
Supplemental disclosure of cash flow information:
Interest paid	662	1,439
Income taxes paid	$ 389	$ 898