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Investments (Amortized Cost And Fair Values Classified By Contractual Maturity Date) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Schedule of Investments [Line Items]    
Amortized Cost: Due after one year through five years $ 20,041  
Amortized Cost: Due after five years through ten years 69,285  
Amortized Cost: Due after ten years 93,612  
Amortized Cost: Sub Total 182,938  
Fair Value: Due after one year through five years 20,105  
Fair Value: Due after five years through ten years 69,095  
Fair Value: Due after ten years 68,809  
Available For Sale Debt Maturities Fair Value Sub Total 158,009  
Available-for-sale Securities, Amortized Cost Basis 326,394 245,106
Available-for-sale Securities 297,010 223,273
Amortized Cost: Due after ten years 3,900  
Fair Value: Due after ten years 3,536  
Residential mortgage-backed agencies [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 87,049  
Fair Value: without Single Maturity Date 83,785  
Available-for-sale Securities, Amortized Cost Basis 87,049 43,596
Available-for-sale Securities 83,785 44,108
Commercial mortgage-backed agencies [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 28,174  
Fair Value: without Single Maturity Date 27,281  
Available-for-sale Securities, Amortized Cost Basis 28,174 37,330
Available-for-sale Securities 27,281 37,618
Collateralized mortgage obligations [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 28,233  
Fair Value: without Single Maturity Date 27,935  
Available-for-sale Securities, Amortized Cost Basis 28,233 31,836
Available-for-sale Securities $ 27,935 $ 31,731