Covered Assets And Indemnification Asset (Summary Of Activity In Covered Other Real Estate Owned) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Covered Assets And Indemnification Asset [Abstract]
Balance, beginning of period	$ 12,787	$ 27,689	$ 19,491	$ 29,863
Additions to covered OREO	562	5,632	1,346	8,668
Dispositions of covered OREO	(3,718)	(2,503)	(8,300)	(6,457)
Valuation adjustments in the period	440	665	3,346	1,921
Balance, end of period	$ 9,191	$ 30,153	$ 9,191	$ 30,153