Non-covered Other Real Estate Owned (Schedule of Changes in Non-covered Other Real Estate Owned) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Non-covered Other Real Estate Owned
Balance, beginning of period	$ 34,512	$ 18,872	$ 32,791	$ 24,566
Additions to OREO	15,419	11,888	25,322	17,895
Dispositions of OREO	(12,134)	(4,293)	(18,186)	(15,087)
Valuation adjustments in the period	(3,388)	(814)	(5,518)	(1,721)
Balance, end of period	$ 34,409	$ 25,653	$ 34,409	$ 25,653