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Consolidated Statement of Stockholders' Equity (Deficit) (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Issuance cost on issuance of common stock and warrants | $ 2,015,808 | $ 1,335,327 | $ 2,051,699
Common Stock [Member] |  |  |
Issuance cost on issuance of common stock and warrants | 2,015,808 | 1,335,327 | 2,051,699
Additional Paid-in Capital [Member] |  |  |
Issuance cost on issuance of common stock and warrants | $ 2,015,808 | $ 1,335,327 | $ 2,051,699

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