Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net loss	$ (1,117)	$ (17,330)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Depreciation expense	2,164	2,740
Restructuring	3,030	4,991
Stock-based compensation	318	424
Net pension cost	261	1,379
Deferred income taxes	(650)	576
Changes in assets and liabilities:
Decrease in accounts receivable, net and contract assets	389	14,592
(Increase) decrease in inventory	(23)	39
(Increase) decrease in prepaid expenses, income tax receivable and other assets	(11,940)	18,223
Decrease (increase) in accounts payable and accrued expenses	472	(11,630)
Decrease (increase) in accrued payroll, deferred revenue, lease liabilities and other long-term liabilities	(349)	1,323
Net cash (used in) provided by operating activities	(7,445)	15,327
Cash flows from investing activities
Purchases of property, plant and equipment	(25)	(1,306)
Proceeds from sale of property, plant and equipment	1,813	15
Net cash provided by (used in) investing activities	1,788	(1,291)
Cash flows from financing activities
Borrowings	10,000	4,500
Repayment of borrowings	(1,500)
Debt financing costs	(275)	(328)
Issuance of common stock		(2)
Issuance of treasury stock		14
Payment of finance leases	(191)	(227)
Net cash provided by financing activities	8,034	3,733
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(62)	349
Net increase in cash and cash equivalents and restricted cash	2,315	18,118
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	36,437	39,000
Supplemental disclosures
Cash paid for interest	328	411
Cash received for income taxes, net of payments	44	19,465
Non-cash investing and financing activities
Purchases of property, plant and equipment included in accounts payable	$ 2,244	$ 609