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SUBSEQUENT EVENT (Details) (USD $) | 0 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 0 Months Ended |  | 1 Months Ended |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 22, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Mar. 18, 2013 Rights offering item | Dec. 31, 2012 RCF Minimum Rights offering | Mar. 18, 2013 RCF Short term financing | Mar. 18, 2013 RCF Short term financing Rights offering | Jan. 22, 2013 Subsequent event | Dec. 31, 2012 Subsequent event | Mar. 18, 2013 Subsequent event Rights offering item | Mar. 18, 2013 Subsequent event RCF Rights offering | Mar. 18, 2013 Subsequent event RCF Short term financing Rights offering
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split ratio | 0.1 |  |  |  |  |  |  |  | 0.1 |  |  |  |
Effect of reverse stock split on the par value of the shares |  | $ 0.001 | $ 0.001 |  |  |  |  |  | $ 0.00 |  |  |  |
Effect of reverse stock split on the authorized number of shares |  | 200,000,000 | 200,000,000 |  |  |  |  |  | 0 |  |  |  |
Common stock outstanding before reverse stock split (in shares) |  | 161,100,000 |  |  |  |  |  |  |  | 161,100,000 |  |  |
Common stock outstanding (in shares) |  | 16,150,163 | 9,400,501 |  |  |  |  |  |  | 16,150,163 |  |  |
Issuance of common stock, net |  | $ 20,264,692 | $ 352,855 | $ 19,138,091 | $ 8,900,000 |  |  |  |  |  | $ 8,900,000 |  |
Shares of common stock sold through a rights offering |  |  |  |  |  |  |  |  |  |  | 3,500,000 |  |
Short term financing repaid |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  | 5,000,000
Number of shares of common stock issued upon conversion |  |  |  |  |  |  | 1,960,000 |  |  |  |  |  | 1,960,000
Ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 32.80% |
Number of non-transferrable subscription rights received (in shares) |  |  |  |  | 0.3119 |  |  |  |  |  | 0.3119 |  |
Number of subscription rights issued for each share of common stock owned or subject to a warrant |  |  |  |  | 1 |  |  |  |  |  | 1 |  |
Exercise price (in dollars per share) |  |  |  |  | $ 2.55 |  |  |  |  |  | $ 2.55 |  |
Minimum total proceeds from rights offering under the standby purchase agreement |  |  |  |  |  | $ 8,000,000 |  |  |  |  |  |  |

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