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Fair Value Measurements and Disclosures (Details Textual) (USD $)
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6 Months Ended |
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Jun. 30, 2012
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| Fair Value Measurements and Disclosures (Textual) [Abstract] | |
| Minimum current appraisal is more than one year old and/or the loan balance | $ 200,000 |
| Percentage of time deposits provide for automatic renewal at current interest rates | 98.00% |