CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows provided by operating activities:
Net (loss) income	$ (1,493)	$ 32,414
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	4,716	3,955
Amortization of purchased intangible assets	707	795
Amortization of deferred debt issuance costs	99	83
Stock-based compensation	2,559	2,666
Deferred income taxes	(1,360)	424
(Gain) loss on disposal of property, plant and equipment	(1)	317
Restructuring expenses, net and asset impairments	3,162	402
Change in:
Accounts receivable, net	27,245	(16,123)
Inventories	(5,713)	(8,636)
Prepaid expenses and other	(1,242)	3,850
Accounts payable	(10,778)	12,657
Contract liabilities	2,477	936
Accrued anti-dumping duties and penalties	0	(8,000)
Accrued expenses and other liabilities	(9,250)	(2,438)
Net cash provided by operating activities	11,128	23,302
Cash flows used in investing activities:
Acquisition of property, plant and equipment	(7,476)	(16,283)
Proceeds on sale of property, plant and equipment	14	1,258
Net cash used in investing activities	(7,462)	(15,025)
Cash flows used in financing activities:
Repayments on bank lines of credit, net	0	(3,999)
Repayments on capital expenditure facility	(1,562)	(1,562)
Payment of dividends	(3,749)	(598)
Payment of debt issuance costs	(84)	0
Net proceeds from issuance of common stock to employees and directors	263	358
Treasury stock purchases	(1,068)	(956)
Net cash used in financing activities	(6,200)	(6,757)
Effects of exchanges rates on cash	(571)	(14)
Net increase (decrease) in cash and cash equivalents	(3,105)	1,506
Cash and cash equivalents, beginning of the period	20,353	13,375
Cash and cash equivalents, end of the period	$ 17,248	$ 14,881