Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net loss	$ (2,961)	$ (6,570)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	11,879	11,155
Loss on asset sales and disposals	92	23
Change in accounts receivable	4,962	1,961
Change in inventories	(14,311)	(3,827)
Change in accounts payable	(4,458)	(3,921)
Accrued interest and amortization of discounts and finance fees	357	378
Pension & non-pension post-retirement benefits, net	1,975	2,116
Accrued liabilities & prepaid expenses	(7,464)	(4,545)
Income taxes	(2,769)	(4,236)
Share-based compensation expense	290	832
Other operating activities	(736)	320
Net cash used in operating activities	(13,144)	(6,314)
Investing activities:
Additions to property, plant and equipment	(11,271)	(11,952)
Net cash used in investing activities	(11,271)	(11,952)
Financing activities:
Borrowings on ABL credit facility	42,177	0
Repayments on ABL credit facility	(12,000)	0
Other repayments	(1,383)	(169)
Repayments on Term Loan B	(1,100)	(6,100)
Taxes paid on distribution of equity awards	(203)	(423)
Dividends	(2,595)	(2,577)
Net cash provided by (used in) financing activities	24,896	(9,269)
Effect of exchange rate fluctuations on cash	569	267
Increase (decrease) in cash	1,050	(27,268)
Cash & cash equivalents at beginning of period	24,696	61,011
Cash & cash equivalents at end of period	25,746	33,743
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	4,588	4,504
Cash paid during the period for income taxes	$ 1,120	$ 779