Annual report pursuant to Section 13 and 15(d)

Statements of Stockholders' Equity (Parenthetical)

v3.8.0.1
Statements of Stockholders' Equity (Parenthetical) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]      
Stock issuance cost $ 2,969,837 $ 260,179 $ 509,215