Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net income (loss)	$ 14,394	$ (25,168)	$ 17,506	$ (28,552)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	10,469	10,592	20,653	21,268
Loss on asset sales and disposals	92	17	303	13
Change in accounts receivable	(1,802)	(19,481)	(7,449)	(14,403)
Change in inventories	(9,699)	(8,168)	(26,419)	(19,363)
Change in accounts payable	(5,002)	6,667	(7,341)	1,352
Accrued interest and amortization of discounts and finance fees	390	(5,911)	602	1,345
Call Premium on senior notes	0	37,348	0	37,348
Write-off of finance fees on senior notes	0	9,086	0	9,086
Pension & non-pension postretirement benefits	895	1,397	1,898	2,769
Restructuring	0	(46)	0	(289)
Accrued liabilities & prepaid expenses	14,978	4,647	12,102	(7,722)
Income taxes	422	(770)	(938)	(3,923)
Share-based compensation expense	2,515	1,634	4,644	2,637
Other operating activities	90	(1,491)	(1,055)	(1,586)
Net cash provided by (used in) operating activities	27,742	10,353	14,506	(20)
Investing activities:
Additions to property, plant and equipment	(16,577)	(11,934)	(33,236)	(21,835)
Proceeds from furnace malfunction insurance recovery			0	2,350
Proceeds from asset sales and other	2	0	2	4
Net cash used in investing activities	(16,575)	(11,934)	(33,234)	(19,481)
Financing activities:
Borrowing on ABL credit facility	30,400	21,300	44,500	21,300
Repayments on ABL credit facility	(20,500)	(14,300)	(30,500)	(14,300)
Other repayments	(12)	(65)	(3,267)	(115)
Other borrowings	0	1,964	0	1,964
Payments on 6.875% senior notes	0	(405,000)	0	(405,000)
Proceeds from Term Loan B	0	438,900	0	438,900
Repayments on Term Loan B	(1,100)	0	(2,200)	0
Call premium on senior notes	0	(37,348)	0	(37,348)
Stock options exercised	1,141	1,786	2,989	2,122
Dividends	(2,398)	0	(4,800)	0
Treasury shares purchased	(6,131)	0	(15,275)	0
Debt issuance costs and other	0	(6,868)	0	(6,868)
Net cash provided by (used in) financing activities	1,400	369	(8,553)	655
Effect of exchange rate fluctuations on cash	169	(52)	(1,411)	(153)
Increase (decrease) in cash	12,736	(1,264)	(28,692)	(18,999)
Cash at beginning of period	18,616	24,473	60,044	42,208
Cash at end of period	31,352	23,209	31,352	23,209
Supplemental disclosure of cash flow information:
Cash paid during the period for interest, net of capitalized interest	4,156	11,483	8,085	11,667
Cash paid during the period for income taxes	$ 1,681	$ 1,477	$ 2,862	$ 3,293