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Stockholders' Equity (Details Textual) (USD $) | 6 Months Ended |  |  |  | 6 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2012 Remeasuring [Member] | Dec. 31, 2011 Remeasuring [Member] | Jun. 30, 2012 Stock Warrants [Member] | Jun. 30, 2012 Stock Warrants [Member] Remeasuring [Member] | Mar. 31, 2012 Stock Warrants [Member] Remeasuring [Member]
Stockholders' Equity (Textual) [Abstract] |  |  |  |  |  |  |
Number of shares of common stock to be purchased by issuing warrants | 250,000 |  |  |  |  |  |
Exercise price of stock warrants | 9.60 | 9.60 |  |  |  |  |
Warrants expiration date | Oct. 14, 2015 |  |  |  |  |  |
Fair value of warrants outstanding | $ 2,000,000 |  |  | $ 883,000 |  |  |
Increase in fair value of warrants due to remeasurements |  |  | $ 137,000 |  |  |  |
Percentage of weighted average expected stock volatility |  |  |  |  | 111.46% | 55.13% |
Contract term of expected life assumption |  |  |  |  | 5 years |  | 3 years 3 months 18 days
Percentage of risk free rate for warrant |  |  |  |  | 2.07% | 0.66% |

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