Quarterly report pursuant to Section 13 or 15(d)

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

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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical)
3 Months Ended
Jul. 31, 2021
USD ($)
Statement of Stockholders' Equity [Abstract]  
Payments of Stock Issuance Costs $ 5,959,800