Supplemental Guarantor Information Consolidating Condensed Statements of Operations (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 The Company (Parent) [Member]	Mar. 31, 2011 The Company (Parent) [Member]	Mar. 31, 2012 Combined Guarantor Subsidiaries [Member]	Mar. 31, 2011 Combined Guarantor Subsidiaries [Member]	Mar. 31, 2012 Combined Non-Guarantor Subsidiaries [Member]	Mar. 31, 2011 Combined Non-Guarantor Subsidiaries [Member]	Mar. 31, 2012 Eliminations [Member]	Mar. 31, 2011 Eliminations [Member]	Mar. 31, 2012 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]	Feb. 17, 2007 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]
Condensed Financial Statements, Captions [Line Items]
Interest Rate											4.125%
Debt Instrument, Face Amount												$ 135,000,000
Net sales	433,564,000	428,498,000	90,032,000	92,232,000	203,117,000	189,627,000	173,388,000	170,813,000	(32,973,000)	(24,174,000)
Cost of products sold	313,995,000	305,492,000	67,952,000	66,338,000	159,397,000	149,050,000	119,415,000	114,362,000	(32,769,000)	(24,258,000)
Gross Profit	119,569,000	123,006,000	22,080,000	25,894,000	43,720,000	40,577,000	53,973,000	56,451,000	(204,000)	84,000
Selling, general and administrative expense	107,499,000	105,777,000	32,769,000	32,700,000	29,669,000	14,193,000	45,061,000	45,510,000	0	13,374,000
Loss on debt extinguishment including debt finance charges and associated fees	0	4,881,000		4,881,000		0		0		0
Interest Expense, Net	1,139,000	2,344,000	(870,000)	1,063,000	1,249,000	377,000	760,000	904,000	0	0
Income (loss) from equity investee	0	0	18,246,000	20,824,000	1,044,000	4,335,000	199,000	(21,000)	(19,489,000)	(25,138,000)
Earnings (loss) before Income Taxes	10,383,000	10,004,000	8,421,000	8,074,000	13,838,000	30,342,000	7,817,000	10,016,000	(19,693,000)	(38,428,000)
Income taxes (benefit)	2,150,000	2,550,000	188,000	620,000	87,000	100,000	1,875,000	1,830,000	0	0
Net earnings (loss)	8,233,000	7,454,000	8,233,000	7,454,000	13,751,000	30,242,000	5,942,000	8,186,000	(19,693,000)	(38,428,000)
Other Comprehensive Income (Loss), Net of Tax	1,186,000	33,938,000	1,186,000	33,938,000	1,845,000	2,386,000	(150,000)	32,453,000	(1,695,000)	(34,839,000)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	9,419,000	41,392,000	9,419,000	41,392,000	15,596,000	32,628,000	5,792,000	40,639,000	(21,388,000)	(73,267,000)
Restructuring Charges	$ 548,000	$ 0	$ 6,000		$ 8,000		$ 534,000		$ 0