Non-Covered Other Real Estate Owned, Net (Schedule Of Changes In Other Real Estate Owned) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Non-Covered Other Real Estate Owned, Net [Abstract]
Balance, beginning of period	$ 32,791,000	$ 24,566,000	$ 27,898,000
Additions to OREO	47,414,000	41,491,000	50,914,000
Dispositions of OREO	(37,083,000)	(29,192,000)	(41,999,000)
Valuation adjustments in the period	(8,947,000)	(4,074,000)	(12,247,000)
Balance, end of period	34,175,000	32,791,000	24,566,000
Recognized valuation allowances	$ 5,100,000	$ 2,400,000	$ 11,400,000