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LIQUIDITY (Details) (USD $) | 1 Months Ended | 3 Months Ended |  |  | 1 Months Ended | 0 Months Ended | 1 Months Ended |  | 1 Months Ended |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2013 | Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2013 Rights offering item | Mar. 05, 2013 RCF Short term financing | Dec. 31, 2012 RCF Short term financing | Mar. 31, 2013 RCF Rights offering | Mar. 31, 2013 RCF Rights offering Short term financing | Mar. 31, 2013 BTIG, LLC ATM Sales Agreement | Dec. 31, 2011 BTIG, LLC Maximum ATM Sales Agreement | Apr. 30, 2013 Lexon | Feb. 28, 2013 Lexon
LIQUIDITY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Negative cash flow from operations |  | $ 3,887,132 | $ 3,142,649 |  |  |  |  |  |  |  |  |  |  |
Cash | 7,900,000 | 4,350,219 | 9,907,372 | 4,664,596 | 2,890,263 |  |  |  |  |  |  |  |  |
Amount paid for certain expenditures that are annual or quarterly in nature or are non-recurring costs | 840,000 |  |  |  |  |  |  |  |  |  |  |  |  |
LIQUIDITY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subscription rights issued for each share of common stock owned or subject to a warrant |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Number of shares of common stock entitled to be purchased for each subscription right |  |  |  |  |  | 0.3119 |  |  |  |  |  |  |  |
Exercise price (in dollars per share) |  |  |  |  |  | $ 2.55 |  |  |  |  |  |  |  |
Net proceeds from sale of shares of common stock in cash |  |  |  |  |  | 3,600,000 |  |  |  |  |  |  |  |
Short term financing repaid |  |  |  |  |  |  |  |  |  | 5,000,000 |  |  |  |
Number of shares of common stock issued upon conversion |  |  |  |  |  |  | 1,960,000 |  |  | 1,960,000 |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  | 32.80% |  |  |  |  |
Restricted cash |  | 9,497,497 |  | 9,491,865 |  |  |  |  |  |  |  |  | 3,600,000 | 9,300,000
Amount of the bonds written by the insurer |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  |  | 9,000,000
Required collateral as a percentage of bond amount (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00%
Increase in cash |  |  |  |  |  |  |  |  |  |  |  |  | 5,400,000 |
Aggregate offering price of the shares of common stock available to be sold under ATM Sales Agreement |  |  |  |  |  |  |  |  |  |  | $ 9,000,000 | $ 15,000,000 |  |

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