Goodwill and Intangible Assets (Amortization Expense) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 1,900,000	$ 1,500,000	$ 3,800,000	$ 3,100,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remaining 2012			3,932,000
2013			7,029,000
2014			6,558,000
2015			6,275,000
2016			$ 6,254,000