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Capital Purchase Program (Details) (USD $)
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3 Months Ended |
9 Months Ended |
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Mar. 31, 2011
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Jun. 30, 2009
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
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May 01, 2009
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| Schedule of Capital Purchase Program [Line Items] |
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| Shares of Series A preferred stocks sold (in shares) |
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14,738 |
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14,738 |
14,738 |
| Par value per share (in dollars per share) |
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$ 4 |
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$ 4 |
$ 4.00 |
| Liquidation preference (in dollars per share) |
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$ 1,000 |
|
$ 1,000 |
$ 1,000 |
| Common stock, shares issued (in shares) |
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4,251,795 |
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4,243,378 |
499,029 |
| Common stocks purchased at initial exercise price per share subject to certain dilution (in dollars per share) |
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|
|
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$ 4.43 |
| Aggregate purchase price of common stocks |
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$ 14,738,000 |
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| Fair value of preferred stock estimated using discounted cash flow methodology (in hundredths) |
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13.00% |
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| Discounted cash flow methodology, number of payments |
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20 |
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| Discount cash flow methodology, term |
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5 years |
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| Fair value assumptions, volatility rate (in hundredths) |
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25.00% |
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| Fair value assumptions, risk-free rate (in hundredths) |
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2.03% |
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| Fair value assumption, yield (in hundredths) |
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6.162% |
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| Fair value assumption, estimated life |
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5 years |
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| Term of effective interest rate method accreted as discount on preferred stock |
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5 years |
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| Cumulative dividend rate per annum for first five years (in hundredths) |
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5.00% |
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| Cumulative dividend rate per annum thereafter (in hundredths) |
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9.00% |
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| Quarterly cash dividend deferred |
184,225 |
|
516,562 |
551,160 |
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| Total arrearage on preferred stock |
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$ 1,166,758 |
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