Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net sales	$ 1,340,935	$ 1,361,759	$ 2,700,067	$ 2,753,344
Cost of sales	1,248,525	1,296,250	2,509,028	2,607,032
Gross profit	92,410	65,509	191,039	146,312
Selling, general and administrative expenses	74,208	54,774	124,238	101,234
Equity in earnings of unconsolidated affiliates	5,378	8,929	20,328	11,728
Operating income	23,580	19,664	87,129	56,806
Interest expense, net	32,602	33,738	65,420	66,046
Loss on extinguishment of long-term debt				20,744
Other expense, net	30,149	11,840	31,044	5,708
Loss before income taxes	(39,171)	(25,914)	(9,335)	(35,692)
Provision for income taxes	5,450	2,150	18,200	2,050
Net loss	$ (44,621)	$ (28,064)	$ (27,535)	$ (37,742)
Weighted average shares- basic and diluted	38,912	37,270	38,096	37,270
Net loss per share- basic and diluted	$ (1.15)	$ (0.75)	$ (0.72)	$ (1.01)