Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income (loss)	$ 5,118	$ (13,527)
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation expenses	1,121	1,442
Restructuring	271	2,190
Stock-based compensation	215	150
Net pension cost	(211)	1,013
Deferred income taxes	(146)	584
Changes in assets and liabilities:
Decrease in accounts receivable, net and contract assets	3,089	7,746
(Increase) decrease in inventory	(53)	62
(Increase) decrease in prepaid expenses, income tax receivable and other assets	(11,242)	2,689
Decrease in accounts payable and accrued expenses	(355)	(5,152)
Decrease in accrued payroll, deferred revenue, lease liabilities and other long-term liabilities	(1,781)	(68)
Net cash used in operating activities	(3,974)	(2,871)
Cash flows from investing activities
Purchases of property, plant and equipment	(832)	(1,106)
Proceeds from sale of property, plant and equipment	196	5
Net cash used in investing activities	(636)	(1,101)
Cash flows from financing activities
Borrowings		4,500
Debt financing costs	(129)	(248)
Payment of finance leases	(110)	(208)
Issuance of treasury stock		16
Net cash (used in) provided by financing activities	(239)	4,060
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(558)	(28)
Net (decrease) increase in cash and cash equivalents and restricted cash	(5,407)	60
Cash and cash equivalents and restricted cash at beginning of period	34,122	20,882
Cash and cash equivalents and restricted cash at end of period	28,715	20,942
Supplemental disclosures
Cash paid for interest	186	186
Cash received for income taxes, net of refunds	88	4,565
Non-cash investing and financing activities
Purchases of property, plant and equipment included in accounts payable	$ 848	$ 685