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Fair Value of Financial Instruments (Details Textual) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Fair Value of Financial Instruments (Textual) [Abstract]    
Impaired Loans Categorized as Level 3 $ 4,591 $ 1,854
Specific Allocation for Impaired Loans 865 175
Fair Value of Financial Instruments (Additional Textual) [Abstract]    
Interest-Bearing Deposits Maturing 90 days  
Carrying Amounts of Dividends Payable, Number of days 40 days  
No Impairment Charge to Other Expense was Required to Adjust these Assets to their Estimated Fair Values 0  
Fair Value on a Recurring Basis [Member]
    
Fair Value of Financial Instruments (Textual) [Abstract]    
Specific Allocation for Impaired Loans 865 175
Significant Unobservable Inputs (Level 3) [Member]
    
Fair Value of Financial Instruments (Textual) [Abstract]    
Impaired Loans Categorized as Level 3 $ 4,600 $ 1,900