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Investments (Amortized Cost And Fair Values Classified By Contractual Maturity Date) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Schedule of Investments [Line Items]    
Amortized Cost: Due after one year through five years $ 20,049  
Amortized Cost: Due after five years through ten years 73,227  
Amortized Cost: Due after ten years 96,882  
Amortized Cost: Sub Total 190,158  
Fair Value: Due after one year through five years 20,041  
Fair Value: Due after five years through ten years 72,868  
Fair Value: Due after ten years 72,332  
Available For Sale Debt Maturities Fair Value Sub Total 165,241  
Available-for-sale Securities, Amortized Cost Basis 333,736 245,106
Available-for-sale Securities 304,681 223,273
Amortized Cost: Due after ten years 3,900  
Fair Value: Due after ten years 3,913  
Residential mortgage-backed agencies [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 88,046  
Fair Value: without Single Maturity Date 84,687  
Available-for-sale Securities, Amortized Cost Basis 88,046 43,596
Available-for-sale Securities 84,687 44,108
Commercial mortgage-backed agencies [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 35,903  
Fair Value: without Single Maturity Date 35,228  
Available-for-sale Securities, Amortized Cost Basis 35,903 37,330
Available-for-sale Securities 35,228 37,618
Collateralized mortgage obligations [Member]
    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 19,629  
Fair Value: without Single Maturity Date 19,525  
Available-for-sale Securities, Amortized Cost Basis 19,629 31,836
Available-for-sale Securities $ 19,525 $ 31,731