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Fair Value of Instruments (Details Textual) (USD $) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2011
Fair Value of Instruments (Textual) [Abstract] |  |  |
Specific Allocation for Impaired Loans | $ 557,000 |  | $ 317,000
Fair Value of Instruments (Additional Textual) [Abstract] |  |  |
Interest-Bearing Deposits Maturing | 90 days |  |
Carrying Amounts of Dividends Payable | 40 days |  |
No Impairment Charge to Other Expense was Required to Adjust these Assets to their Estimated Fair Values | 0 | 0 |
Fair Value on a Recurring Basis [Member] |  |  |
Fair Value of Instruments (Textual) [Abstract] |  |  |
Specific Allocation for Impaired Loans | 557,000 | 175,000 |
Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Instruments (Textual) [Abstract] |  |  |
Impaired Loans Categorized as Level 3 | $ 4,350,000 | $ 1,850,000 |

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