Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income (loss)	$ 1,027	$ (7,402)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	23,119	22,383
Loss on asset sales and disposals	232	54
Change in accounts receivable	(11,477)	(2,538)
Change in inventories	(13,956)	(7,182)
Change in accounts payable	919	(6,344)
Accrued interest and amortization of discounts and finance fees	449	713
Pension & non-pension post-retirement benefits, net	176	2,982
Accrued liabilities & prepaid expenses	1,215	9,442
Income taxes	(1,698)	(3,619)
Share-based compensation expense	1,456	2,148
Other operating activities	(662)	(728)
Net cash provided by operating activities	800	9,909
Investing activities:
Additions to property, plant and equipment	(21,349)	(27,048)
Net cash used in investing activities	(21,349)	(27,048)
Financing activities:
Borrowings on ABL credit facility	51,131	3,277
Repayments on ABL credit facility	(28,631)	(3,277)
Other repayments	(1,383)	(169)
Repayments on Term Loan B	(2,200)	(12,200)
Stock options exercised	0	466
Taxes paid on distribution of equity awards	(214)	(601)
Dividends	(2,595)	(5,169)
Other financing activities	0	888
Net cash provided by (used in) financing activities	16,108	(16,785)
Effect of exchange rate fluctuations on cash	(437)	1,080
Decrease in cash	(4,878)	(32,844)
Cash & cash equivalents at beginning of period	24,696	61,011
Cash & cash equivalents at end of period	19,818	28,167
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	9,766	9,155
Cash paid during the period for income taxes	$ 3,584	$ 2,011