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Commitments And Contingencies (Details) (USD $)
9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Standby Letters Of Credit [Member]
Dec. 31, 2011
Standby Letters Of Credit [Member]
Sep. 30, 2012
Commercial Letters Of Credit [Member]
Dec. 31, 2011
Commercial Letters Of Credit [Member]
Sep. 30, 2012
Home equity - junior liens (including lines of credit) [Member]
Commitments To Extend Credit [Member]
Dec. 31, 2011
Home equity - junior liens (including lines of credit) [Member]
Commitments To Extend Credit [Member]
Sep. 30, 2012
Commercial Real Estate [Member]
Commitments To Extend Credit [Member]
Dec. 31, 2011
Commercial Real Estate [Member]
Commitments To Extend Credit [Member]
Sep. 30, 2012
Other Commitments [Member]
Commitments To Extend Credit [Member]
Dec. 31, 2011
Other Commitments [Member]
Commitments To Extend Credit [Member]
Commitments And Contingencies [Line Items]                      
Contractual obligations   $ 16,703,000 $ 20,110,000 $ 525,000 $ 412,000 $ 154,874,000 $ 143,856,000 $ 38,060,000 $ 29,995,000 $ 176,732,000 $ 185,602,000
Settlement 3,616,000                    
Litigation forgive and release amount $ 3,500,000