Covered Loans (Schedule Of Accretable Yield Or Income Expected To Be Collected) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Covered Loans [Line Items]
Beginning, Balance	$ 0
New loans purchased	13,365
Accretion of income	(15,313)
Reclassifications from (to) nonaccretable difference	23,596
Disposals/other adjustments	(269)
Ending, Balance	21,379
Covered Loans [Member]
Covered Loans [Line Items]
Beginning, Balance	0
New loans purchased	92,123
Accretion of income	(19,428)
Reclassifications from (to) nonaccretable difference	19,051
Disposals/other adjustments	307
Ending, Balance	$ 92,053