Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Parenthetical)

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Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)
1 Months Ended 12 Months Ended
Oct. 25, 2017
Feb. 28, 2018
Jul. 31, 2018
Statement of Stockholders' Equity [Abstract]      
Payment of finance and offering costs $ 901,137 $ 2,249,169 $ 299,963