Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income [Abstract]
Net sales	$ 362,916	$ 272,788
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	263,967	201,428
Warehouse, processing and delivery expense	38,526	33,142
Sales, general, and administrative expense	35,212	31,121
Depreciation and amortization expense	6,613	4,999
Operating income	18,598	2,098
Interest expense, net	(10,193)	(986)
Interest expense - unrealized loss on debt conversion option	(11,340)
(Loss) income before income taxes and equity in earnings of joint venture	(2,935)	1,112
Income taxes	(4,373)	(1,268)
Income (loss) before equity in earnings of joint venture	(7,308)	(156)
Equity in earnings of joint venture	3,008	2,859
Net (loss) income	(4,300)	2,703
Basic (loss) income per share	$ (0.19)	$ 0.12
Diluted (loss) income per share	$ (0.19)	$ 0.12
Dividends per common share
Comprehensive (loss) income	$ (1,076)	$ 4,032