Condensed Consolidated Statements Of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Statement [Abstract]
Net sales	$ 774,252	$ 793,484
Cost of sales	679,151	704,971
Selling, general and administrative	53,777	67,809
Depreciation	13,627	13,224
Amortization	2,342	2,348
Equity in losses of investees	0	1,703
Restructuring and relocation costs	217	3,863
Operating income (loss)	25,138	(434)
Interest income	732	899
Interest expense	(14,564)	(10,507)
Loss on debt extinguishment	(6,275)	0
Other income, net	555	0
Income (loss) before income taxes	5,586	(10,042)
Income tax expense	(3,209)	(1,100)
Net income (loss)	$ 2,377	$ (11,142)
Earnings (loss) per common share - basic (in dollars per share)	$ 0.05	$ (0.24)
Earnings (loss) per common share - diluted (in dollars per share)	$ 0.05	$ (0.24)