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LIQUIDITY (Details) (USD $) | 6 Months Ended |  |  |  | 1 Months Ended |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jul. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2013 Rights offering | Mar. 31, 2013 RCF Rights offering Short term financing | Jun. 30, 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 | $ 8,224,100 | $ 7,285,894 |  |  |  |  |  |  |  |  |
Cash | 5,325,813 | 2,824,375 | 4,250,000 | 4,664,596 | 2,890,263 |  |  |  |  |  |
LIQUIDITY |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of shares of common stock in cash |  |  |  |  |  | 3,600,000 |  |  |  |  |
Short term financing repaid |  |  |  |  |  |  | 5,000,000 |  |  |  |
Restricted cash | 4,010,292 |  |  | 9,491,865 |  |  |  |  |  | 3,600,000 | 9,300,000
Amount of the bonds written by the insurer |  |  |  |  |  |  |  |  |  |  | 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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