Annual report pursuant to Section 13 and 15(d)

Statements of Stockholders' Equity (Parenthetical)

v3.19.1
Statements of Stockholders' Equity (Parenthetical) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]    
Stock issuance cost $ 464,680 $ 2,969,837