Goodwill and Other Intangible Assets (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Intangible assets, gross carrying amount	$ 275,011	$ 263,116
Intangible assets, accumulated amortization	(79,480)	(73,025)
Weighted average amortization period (in years)	29
Future amortization expense [Abstract]
2011	6,455
2012	6,940
2013	6,722
2014	6,330
2015	5,941
2016	5,840
Trademarks and Tradenames [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Unamortized intangible assets, gross carrying amount	88,344	88,344
Customer Relationships [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortized intangible assets, gross carrying amount	133,965	127,594
Intangible assets, accumulated amortization	(45,112)	(40,801)
Weighted average amortization period (in years)	33
Patents and Other Intangible Assets [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortized intangible assets, gross carrying amount	52,702	47,178
Intangible assets, accumulated amortization	$ (34,368)	$ (32,224)
Weighted average amortization period (in years)	14