Supplemental Financial Information (Quarterly Unaudited Financial Data) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Supplemental Financial Information [Abstract]
Net sales	$ 174,141	$ 220,096	$ 208,807	$ 163,563	$ 144,115	$ 169,741	$ 176,924	$ 146,674	$ 766,607	$ 637,454	$ 639,076
Gross profit	26,679	42,963	45,428	30,045	15,932	27,498	33,981	26,457	145,115	103,868	119,728
Intangible asset impairment					77,141			(177)		76,964	60,098
(Loss) income from operations	(6,815)	18,361	17,390	7,222	(88,500)	4,236	9,437	2,185	36,158	(72,642)	(37,061)
Interest expense	5,042	4,869	4,998	4,454	4,363	4,429	4,352	6,570	19,363	19,714	21,433
(Loss) income from continuing operations	(6,854)	7,383	7,246	1,441	(76,338)	781	2,593	(2,392)	9,216	(75,356)	(39,572)
Income (loss) from discontinued operations	249	(469)	559	6,968	1,823	416	888	(18,839)	7,307	(15,712)	(12,453)
Net (loss) income	$ (6,605)	$ 6,914	$ 7,805	$ 8,409	$ (74,515)	$ 1,197	$ 3,481	$ (21,231)	$ 16,523	$ (91,068)	$ (52,025)
Income (loss) per share from continuing operations: Basic	$ (0.22)	$ 0.24	$ 0.24	$ 0.05	$ (2.52)	$ 0.03	$ 0.09	$ (0.08)	$ 0.30	$ (2.49)	$ (1.31)
Income (loss) per share from continuing operations: Diluted	$ (0.22)	$ 0.24	$ 0.24	$ 0.05	$ (2.52)	$ 0.03	$ 0.09	$ (0.08)	$ 0.30	$ (2.49)	$ (1.31)
Income (loss) per share from discontinued operations: Basic	$ 0.00	$ (0.01)	$ 0.02	$ 0.23	$ 0.06	$ 0.01	$ 0.02	$ (0.62)	$ 0.24	$ (0.52)	$ (0.42)
Income (loss) per share from discontinued operations: Diluted	$ 0.00	$ (0.01)	$ 0.01	$ 0.22	$ 0.06	$ 0.01	$ 0.02	$ (0.62)	$ 0.24	$ (0.52)	$ (0.42)