Commitments And Contingencies (Reserve For Unfunded Credit Commitments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Commitments And Contingencies [Abstract]
Beginning balance	$ 9,378	[1]	$ 10,105	[1]	$ 10,500	[1]
Provision	209	[1]	311	[1]	300	[1]
Benefit	(4,138)	[1]	(1,038)	[1]	(695)	[1]
Ending balance	$ 5,449	[1]	$ 9,378	[1]	$ 10,105	[1]

[1] The reserve for unfunded credit commitments is reported as a component of accrued expenses and other liabilities in the accompanying Consolidated Balance Sheets.