Goodwill and Intangible Assets Goodwill and Intangible Assets Text (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill [Line Items]
Goodwill Impairment Charge	$ 0	$ (8,343,000)
Finite-Lived Intangible Assets, Amortization Expense	6,000,000	3,500,000	2,300,000
Deferred Tax Assets, Other		3,200,000
Goodwill, Impaired, Accumulated Impairment Loss	$ 8,343,000	$ 8,343,000