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Securities OTTI (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Debt Securties Other Than Temporary Impairment Charges [Abstract]        
Other Than Temporary Impairment Charges, Trust preferred securities, Individual Issuers $ 0 $ 236 $ 130 $ 338
Other-Than-Temporary Impairment Charges included in earnings 0 236 130 338
Other Than Temporary Impairment On Debt Securities [Abstract]        
Credit Related Other Than Temporary impairement Charges 0 236 130 338
Non-credit Related Other Than Temporary Impairment Charges 0 (80) 0 130
Other Than Temporary Impairment Charges On Debt Securities, Total $ 0 $ 156 $ 130 $ 468