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Fair Value Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Carrying (Reported) Amount, Fair Value Disclosure [Member]
    
Fair Value, Financial Instruments [Line Items]    
Fair Value, Financial Instruments, Loans, Net $ 391,470 $ 363,344
Fair Value, Financial Instruments, Time Deposits 263,195 281,362
Fair Value, Financial Instruments, Long-term Debt 47,217 85,313
Estimate of Fair Value, Fair Value Disclosure [Member]
    
Fair Value, Financial Instruments [Line Items]    
Fair Value, Financial Instruments, Loans, Net 399,533 371,433
Fair Value, Financial Instruments, Time Deposits 267,636 286,644
Fair Value, Financial Instruments, Long-term Debt 51,752 93,360
Fair Value, Inputs, Level 2 [Member]
    
Fair Value, Financial Instruments [Line Items]    
Fair Value, Financial Instruments, Time Deposits 267,636 286,644
Fair Value, Financial Instruments, Long-term Debt 51,752 93,360
Fair Value, Inputs, Level 3 [Member]
    
Fair Value, Financial Instruments [Line Items]    
Fair Value, Financial Instruments, Loans, Net $ 399,533 $ 371,433