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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