Goodwill and Intangible Assets (Amortization Expense) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 1,900,000	$ 1,600,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remaining 2012	5,647,000
2013	6,761,000
2014	6,290,000
2015	6,006,000
2016	$ 5,985,000