Fair Value Measurement (Schedule of Losses Resulting from Nonrecurring Fair Value Adjustments) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Total loss from nonrecurring measurements	$ 21,378	$ 32,263	$ 40,705	$ 66,599
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Loss from nonrecurring measurements	47		72	289
Non-covered Loans and Leases [Member]
Loss from nonrecurring measurements	17,278	31,449	33,194	64,589
Non-covered Other Real Estate Owned [Member]
Loss from nonrecurring measurements	3,388	814	5,518	1,721
Covered Other Real Estate Owned [Member]
Loss from nonrecurring measurements	$ 665		$ 1,921