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Investments (Gross Unrealized Losses And Fair Value Of The Bank's Investments) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Gain (Loss) on Investments [Line Items]    
Fair Value, Less than 12 months $ 2,356 $ 27,430
Unrealized Losses, Less than 12 months 61 441
Fair Value, More than 12 months      
Unrealized Losses, More than 12 months      
Fair Value, Total 2,356 27,430
Unrealized Losses, Total 61 441
US Agency Obligations [Member]
    
Gain (Loss) on Investments [Line Items]    
Fair Value, Less than 12 months 1,120 13,593
Unrealized Losses, Less than 12 months 15 48
Fair Value, More than 12 months      
Unrealized Losses, More than 12 months      
Fair Value, Total 1,120 13,593
Unrealized Losses, Total 15 48
Mortgage-Backed Securities [Member]
    
Gain (Loss) on Investments [Line Items]    
Fair Value, Less than 12 months   985
Unrealized Losses, Less than 12 months   4
Fair Value, More than 12 months     
Unrealized Losses, More than 12 months     
Fair Value, Total   985
Unrealized Losses, Total   4
Municipals [Member]
    
Gain (Loss) on Investments [Line Items]    
Fair Value, Less than 12 months 1,236 12,852
Unrealized Losses, Less than 12 months 46 389
Fair Value, More than 12 months      
Unrealized Losses, More than 12 months      
Fair Value, Total 1,236 12,852
Unrealized Losses, Total $ 46 $ 389