Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical)

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 29, 2020
Dec. 31, 2018
Oct. 31, 2018
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2019
Statement of Stockholders' Equity [Abstract]              
Payments of issuance cost $ 1,954,678 $ 304,916 $ 573,189   $ 80,575   $ 80,575
Declared dividends       $ 0.00 $ 0.00 $ 0.00 $ 0.00