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Preferred Stock (Details) (USD $) | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 31, 2012 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 Person | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 19, 2008
Preferred Stock (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying values of the senior preferred stock |  | $ 17,977,000 |  |  |  | $ 29,318,000 |  |  |  | $ 17,977,000 | $ 29,318,000 |  |
Dividend declared and paid |  |  |  |  |  |  |  |  |  | 1,203,000 | 1,513,000 | 1,513,000 |
Amortized of accretion of the discount on preferred stock |  | 72,000 | 72,000 | 396,000 | 119,000 | 119,000 | 119,000 | 119,000 | 119,000 | 659,000 | 476,000 | 476,000 |
Preferred stock (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred shares |  | 18,255 |  |  |  | 30,255 |  |  |  | 18,255 | 30,255 |  | 30,255
Senior preferred stock, par value |  | $ 0.01 |  |  |  | $ 0.01 |  |  |  | $ 0.01 | $ 0.01 |  | $ 1,000
Warrant |  |  |  |  |  |  |  |  |  | 10 years |  |  |
Discount on the preferred stock |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Redeemed preferred stock | 12,000 |  |  |  |  |  |  |  |  | 12,000 |  |  |
Repaying to U.S. Department of Treasury | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |
CPP funds | 30,255,000 |  |  |  |  |  |  |  |  |  |  |  |
Accrued and unpaid dividends | 140,000 |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock additional accretion |  |  |  |  |  |  |  |  |  | 300,000 |  |  |
Cumulative dividend on the first five years |  |  |  |  |  |  |  |  |  | 5.00% |  |  |
Cumulative dividend thereafter |  |  |  |  |  |  |  |  |  | 9.00% |  |  |
Voting rights of preferred stock |  |  |  |  |  |  |  |  |  | The preferred stock generally does not have any voting rights, subject to an exception in the event the Company fails to pay dividends on the preferred stock for nine or more quarterly periods, whether or not consecutive. Under such circumstances, the Treasury will be entitled to vote to elect two directors to the board until all unpaid dividends have been paid or declared and set apart for payment. |  |  |
Number of directors |  |  |  |  |  |  |  |  |  | 2 |  |  |
Exercise price of warrant |  | 15.81 |  |  |  |  |  |  |  | 15.81 |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  | 287,133 |  |  |
Exchange value |  |  |  |  |  |  |  |  |  | 30,255,000 |  |  |
Carrying values of the senior Common stock |  | 2,382,000 |  |  |  |  |  |  |  | 2,382,000 |  |  |
Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying values of the senior preferred stock |  | 17,977,000 |  |  |  |  |  |  |  | 17,977,000 |  |  |
Dividend declared and paid |  |  |  |  |  |  |  |  |  | 1,203,000 |  |  |
Amortized of accretion of the discount on preferred stock |  |  |  |  |  |  |  |  |  | $ 659,000 |  |  |

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