Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net Income (loss)	$ 13,215	$ (2,738)
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation expense	1,968	2,905
Restructuring	728	3,113
Stock-based compensation	1,092	590
Gain from extinguishment of debt (Paycheck Protection Program Term Note)	(10,000)	0
Net pension (payment) cost	(692)	736
Deferred income taxes	0	(776)
Changes in assets and liabilities:
Increase in accounts receivable and contract assets	(10,761)	(6,752)
Decrease (Increase) in prepaid expenses, income tax receivable and other current assets	199	(7,303)
Decrease in accounts payable and accrued expenses	503	692
Increase in other accrued expenses and liabilities	(2,190)	(1,900)
Net cash used in operating activities	(5,938)	(11,433)
Cash Flows from Investing Activities
Purchases of property, plant and equipment	(2,478)	(1,374)
Proceeds from sale of property, plant and equipment	101	1,891
Net cash (used in) provided by investing activities	(2,377)	517
Cash Flows from Financing Activities
Borrowings	0	10,000
Repayment of borrowings	(4,000)	(1,600)
Debt financing costs	(386)	(517)
Payment of finance leases	(169)	(357)
Treasury stock activities	(290)	(14)
Net cash (used in) provided by financing activities	(4,845)	7,512
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,713)	1,067
Net decrease in cash and cash equivalents and restricted cash	(14,873)	(2,337)
Cash and cash equivalents and restricted cash at beginning of period	33,562	34,122
Cash and cash equivalents and restricted cash at end of period	18,689	31,785
Supplemental disclosures
Cash paid for interest	327	547
Cash paid for income taxes, net	1,134	3,295
Non-cash investing and financing activities
Purchases of property, plant and equipment included in accounts payable	$ 2,752	$ 1,651