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Stock Based Compensation (Details 3) (Warrant [Member], USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2011
Warrant [Member] |  |  |
Summary of warrant transactions |  |  |
Outstanding Beginning Balance, Warrants | 6,000 |  |
Exercisable Beginning Balance, Warrants | 6,000 |  |
Granted, Warrants |  |  |
Expired / Forfeited, Warrants | 4,000 |  |
Exercised, Warrants | 2,000 |  |
Outstanding Ending Balance, Warrants |  |  |
Outstanding Beginning Balance, Weighted Average Exercise Price | $ 10.42 |  |
Exercisable Beginning Balance, Weighted Average Exercise Price | $ 10.42 |  |
Granted, Weighted Average Exercise Price |  |  |
Expired / Forfeited, Weighted Average Exercise Price | $ 10.00 |  |
Exercised, Weighted Average Exercise Price | $ 11.25 |  |
Outstanding Ending Balance, Weighted Average Exercise Price |  |  |

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