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Stock Warrants | 12 Months Ended
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Dec. 31, 2012
Stock Warrants [Abstract] |
Stock Warrants | 20. Stock Warrants A summary of the warrant activity for the years ended December 31, 2012 is as follows:
|  | 2012 |
|  |  |  |  | Weighted |  |  |  |
|  |  |  |  | Average |  |  |  |
|  |  |  |  | Exercise |  |  | Intrinsic |
|  | Warrants |  |  | Price |  |  | Value |
Balance at January 1, 2012 |  |  | 2,333,500 |  |  | $ | 3.47 |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |
Exercised |  |  | - |  |  |  | - |  |  |  |  |
Expired |  |  | (187,500 | ) |  | $ | 3.50 |  |  |  |  |
Balance at December 31, 2012 |  |  | 2,146,000 |  |  | $ | 3.47 |  |  | $ | - |
Exercisable at December 31 |  |  | 2,146,000 |  |  | $ | 3.47 |  |  | $ | - |
A summary of outstanding warrant issuances at December 31, 2012 is as follows:
|  |  | Outstanding |  |  | Vested |
|  |  |  |  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  | Weighted |
|  |  |  |  |  | Weighted |  |  | Average |  |  |  |  |  | Weighted |  |  | Average |
|  |  |  |  |  | Average |  |  | Remaining |  |  |  |  |  | Average |  |  | Remaining |
Price |  |  | Outstanding |  |  | Exercise |  |  | Contractual |  |  | Outstanding |  |  | Exercise |  |  | Contractual |
Range |  |  | Warrants |  |  | Price |  |  | Life in Years |  |  | Warrants |  |  | Price |  |  | Life in Years |
| $3.00 - $4.00 |  |  |  | 2,146,000 |  |  | $ | 3.47 |  |  |  | 0.86 |  |  |  | 2,146,000 |  |  | $ | 3.47 |  |  |  | 0.86 |
The fair value of each grant was estimated at the date of the grant using the Black-Scholes-Merton option pricing model. Black-Scholes-Merton utilizes assumptions related to volatility, the risk free interest rate, the dividend, and employee exercise behavior. Expected volatilities utilized in the model are based mainly on the historical volatility of the Company's stock price and other factors. The risk free rate is based on the U.S. Treasury yield curve in affect at the date of grant. The following assumptions were used in calculating the grant date fair value of warrants granted in 2010:
Weighted average volatility |  |  | 101 | %
Expected term (years) |  |  | 1.99 |
Risk free rate |  |  | 0.37 | %
Dividend yield |  |  | 0.00 | %
Weighted average grant date fair value |  | $ | 0.47 |
Stock warrant expense is recognized using the fair value when granted. During the year ended December 31, 2010, $392,014 was recognized as interest expense in the consolidation statements of operations.

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- Definition The entire disclosure for warrants. + References No definition available. + Details
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- Details
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