Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating activities:
Net income (loss)	$ 13,758	$ 4,749	$ (14,794)	$ 19,174
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	9,569	11,773	30,837	34,170
Loss on asset sales and disposals	234	481	247	514
Change in accounts receivable	(1,926)	732	(18,325)	(10,147)
Change in inventories	(9,460)	3,722	(28,823)	(14,770)
Change in accounts payable	767	318	2,119	(5,999)
Accrued interest and amortization of discounts and finance fees	384	7,266	1,729	7,876
Call premium on senior notes			37,348	1,350
Write-off of finance fees on senior notes			9,086	1,168
Pension & non-pension postretirement benefits	(349)	3,118	2,420	8,322
Restructuring	0	(797)	(289)	2,858
Accrued liabilities & prepaid expenses	4,105	3,533	(3,617)	(13,052)
Income taxes	1,498	(2,106)	(2,425)	(6,285)
Share-based compensation expense	1,109	990	3,746	3,299
Other operating activities	(616)	988	(2,202)	2,994
Net cash provided by operating activities	19,073	34,767	17,057	31,472
Investing activities:
Additions to property, plant and equipment	(16,693)	(10,381)	(38,528)	(30,152)
Proceeds from furnace malfunction insurance recovery			4,346	0
Proceeds from asset sales and other	3	73	7	81
Net cash used in investing activities	(16,690)	(10,308)	(34,175)	(30,071)
Financing activities:
Borrowing on ABL credit facility	33,400	12,400	54,700	42,800
Repayments on ABL credit facility	(31,500)	(22,200)	(45,800)	(42,800)
Other repayments	(5,201)	(4,397)	(5,316)	(4,511)
Other borrowings	3,250	6,094	5,214	6,094
Payments on 6.875% senior notes			(405,000)	(45,000)
Proceeds from Term Loan B			438,900	0
Repayments on Term Loan B	(1,100)	0	(1,100)	0
Call premium on senior notes			(37,348)	(1,350)
Stock options exercised	759	2,059	2,881	5,107
Debt issuance costs and other	(91)	0	(6,959)	0
Net cash provided by (used in) financing activities	(483)	(6,044)	172	(39,660)
Effect of exchange rate fluctuations on cash	(1,020)	507	(1,173)	517
Increase (decrease) in cash	880	18,922	(18,119)	(37,742)
Cash at beginning of period	23,209	10,544	42,208	67,208
Cash at end of period	24,089	29,466	24,089	29,466
Supplemental disclosure of cash flows information:
Cash paid during the period for interest, net of capitalized interest	4,160	271	15,827	16,119
Cash paid during the period for income taxes	$ 2,591	$ 2,280	$ 5,884	$ 10,095