STOCK-BASED COMPENSATION (Details) (USD $)
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12 Months Ended | 122 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
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Total stock-based compensation | $ 1,503,297 | $ 907,460 | $ 4,358,170 |
Employee and Director Stock Option [Member]
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Total stock-based compensation | 1,330,308 | 761,056 | 3,967,053 |
Employee and Director Stock Option [Member] | Research and Development Expense [Member]
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Total stock-based compensation | 319,703 | 190,172 | 808,261 |
Employee and Director Stock Option [Member] | General and Administrative Expense [Member]
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Total stock-based compensation | 1,010,605 | 570,884 | 3,158,792 |
Non Employee Consultant Stock Option [Member]
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Total stock-based compensation | 172,989 | 146,404 | 391,117 |
Non Employee Consultant Stock Option [Member] | Research and Development Expense [Member]
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Total stock-based compensation | 79,879 | 36,157 | 116,036 |
Non Employee Consultant Stock Option [Member] | General and Administrative Expense [Member]
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Total stock-based compensation | $ 93,110 | $ 110,247 | $ 275,081 |