Condensed Consolidated Statement of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net sales	$ 292,714	$ 362,916
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	219,431	263,967
Warehouse, processing and delivery expense	35,584	38,526
Sales, general and administrative expense	29,876	35,654
Restructuring charges	2,225	0
Depreciation and amortization expense	6,571	6,613
Operating (loss) income	(973)	18,156
Interest expense, net	(10,188)	(10,193)
Interest expense - unrealized loss on debt conversion option	0	(11,340)
Other income (expense)	(2,299)	442
Loss before income taxes and equity in earnings of joint venture	(13,460)	(2,935)
Income taxes	1,369	(4,373)
Loss before equity in earnings of joint venture	(12,091)	(7,308)
Equity in earnings of joint venture	1,469	3,008
Net loss	(10,622)	(4,300)
Basic loss per share	$ (0.46)	$ (0.19)
Diluted loss per share	$ (0.46)	$ (0.19)
Dividends per common share	$ 0.00	$ 0.00
Comprehensive loss	$ (10,244)	$ (1,076)