Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net income (loss)	$ (3,384)	$ 1,989
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	10,676	10,774
(Gain) loss on asset sales and disposals	(4)	2
Change in accounts receivable	3,082	(6,043)
Change in inventories	(11,195)	(10,635)
Change in accounts payable	(5,315)	(7,745)
Accrued interest and amortization of discounts and finance fees	7,256	8,131
Pension & non-pension postretirement benefits	1,372	3,700
Restructuring	(243)	4,314
Accrued liabilities & prepaid expenses	(12,369)	(15,792)
Income taxes	(3,153)	(1,626)
Share-based compensation expense	1,003	824
Other operating activities	(95)	(573)
Net cash provided by (used in) operating activities	(12,369)	(12,680)
Investing activities:
Additions to property, plant and equipment	(9,901)	(8,882)
Proceeds from furnace malfunction insurance recovery	4,346	0
Proceeds from asset sales and other	4	4
Net cash (used in) investing activities	(5,551)	(8,878)
Financing activities:
Other repayments	(50)	(59)
Stock options exercised	336	537
Net cash provided by (used in) financing activities	286	478
Effect of exchange rate fluctuations on cash	(101)	(179)
Increase (decrease) in cash	(17,735)	(21,259)
Cash at beginning of period	42,208	67,208
Cash at end of period	24,473	45,949
Supplemental disclosure of cash flows information:
Cash paid during the period for interest	184	288
Cash paid during the period for income taxes	$ 1,816	$ 1,884