Other Real Estate Owned (Activity In The Valuation Allowance For Other Real Estate Losses) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Real Estate Owned [Abstract]
Balance, beginning of year	$ 25,310	$ 22,743	$ 3,814
Provision for losses	10,385	20,139	28,216
OREO disposal	(9,273)	(17,572)	(9,287)
Balance, end of year	$ 26,422	$ 25,310	$ 22,743