Goodwill and Intangible Assets (Amortization Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 1,900,000	$ 1,400,000	$ 5,700,000	$ 4,500,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remaining 2012			1,952,000
2013			7,548,000
2014			7,012,000
2015			6,588,000
2016			$ 6,232,000