Guarantor Financial Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidating Statement of Operations
Net Sales	$ 304,039	$ 294,860	$ 996,347	$ 850,216
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	218,015	221,690	722,663	631,588
Warehouse, processing and delivery expense	36,894	35,076	113,894	102,092
Sales, general and administrative expense	30,319	30,060	100,425	92,045
Depreciation and amortization expense	6,263	4,861	19,350	14,919
Operating (loss) income	12,548	3,173	40,015	9,572
Interest expense, net	(10,280)	(1,221)	(30,437)	(3,327)
Interest expense - unrealized loss on debt conversion option	0		(15,597)
(Loss) income before income taxes and equity in earnings of subsidiaries and joint venture	2,268	1,952	(6,019)	6,245
Income taxes	(453)	(1,266)	(4,185)	(5,000)
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of joint venture	1,358	3,117	6,099	8,958
Net (loss) income	3,173	3,803	(4,105)	10,203
Comprehensive (loss) income	6,123	(385)	(1,415)	8,212
Parent [Member]
Condensed Consolidating Statement of Operations
Net Sales	177,094	160,196	603,494	462,700
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	125,199	121,829	436,815	345,549
Warehouse, processing and delivery expense	22,642	21,008	70,541	61,274
Sales, general and administrative expense	18,982	18,203	60,519	54,804
Depreciation and amortization expense	3,075	2,101	9,681	6,369
Operating (loss) income	7,196	(2,945)	25,938	(5,296)
Interest expense, net	(6,293)	(472)	(19,102)	(877)
Interest expense - unrealized loss on debt conversion option	0		(15,597)
(Loss) income before income taxes and equity in earnings of subsidiaries and joint venture	903	(3,417)	(8,761)	(6,173)
Income taxes	(231)	95	(3,751)	(1,853)
Equity in earnings of subsidiaries	1,143	4,008	2,308	9,271
Equity in earnings of joint venture	1,358	3,117	6,099	8,958
Net (loss) income	3,173	3,803	(4,105)	10,203
Comprehensive (loss) income	6,123	(385)	(1,415)	8,212
Guarantors [Member]
Condensed Consolidating Statement of Operations
Net Sales	65,238	74,872	204,851	215,767
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	47,154	54,809	147,942	156,977
Warehouse, processing and delivery expense	8,497	8,753	25,687	25,604
Sales, general and administrative expense	7,399	7,564	24,041	24,187
Depreciation and amortization expense	2,184	2,122	6,676	6,585
Operating (loss) income	4	1,624	505	2,414
Interest expense, net	0	0	0	0
Interest expense - unrealized loss on debt conversion option	0		0
(Loss) income before income taxes and equity in earnings of subsidiaries and joint venture	4	1,624	505	2,414
Income taxes	183	(562)	138	(885)
Equity in earnings of subsidiaries	(516)	(43)	(757)	348
Equity in earnings of joint venture	0	0	0	0
Net (loss) income	(329)	1,019	(114)	1,877
Comprehensive (loss) income	303	1,246	234	2,320
Non-Guarantors [Member]
Condensed Consolidating Statement of Operations
Net Sales	68,842	61,658	216,476	177,347
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	53,253	46,918	166,253	134,660
Warehouse, processing and delivery expense	5,755	5,315	17,666	15,214
Sales, general and administrative expense	3,938	4,293	15,865	13,054
Depreciation and amortization expense	1,004	638	2,993	1,965
Operating (loss) income	4,892	4,494	13,699	12,454
Interest expense, net	(3,987)	(749)	(11,335)	(2,450)
Interest expense - unrealized loss on debt conversion option	0		0
(Loss) income before income taxes and equity in earnings of subsidiaries and joint venture	905	3,745	2,364	10,004
Income taxes	(230)	(799)	(608)	(2,262)
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of joint venture	0	0	0	0
Net (loss) income	675	2,946	1,756	7,742
Comprehensive (loss) income	3,735	(1,323)	4,775	5,506
Eliminations [Member]
Condensed Consolidating Statement of Operations
Net Sales	(7,135)	(1,866)	(28,474)	(5,598)
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	(7,591)	(1,866)	(28,347)	(5,598)
Warehouse, processing and delivery expense	0	0	0	0
Sales, general and administrative expense	0	0	0	0
Depreciation and amortization expense		0	0	0
Operating (loss) income	456	0	(127)	0
Interest expense, net	0	0	0	0
Interest expense - unrealized loss on debt conversion option	0		0
(Loss) income before income taxes and equity in earnings of subsidiaries and joint venture	456	0	(127)	0
Income taxes	(175)	0	36	0
Equity in earnings of subsidiaries	(627)	(3,965)	(1,551)	(9,619)
Equity in earnings of joint venture	0	0	0	0
Net (loss) income	(346)	(3,965)	(1,642)	(9,619)
Comprehensive (loss) income	$ (4,038)	$ 77	$ (5,009)	$ (7,826)