Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)

v3.21.2
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)
12 Months Ended
Apr. 30, 2020
USD ($)
Statement of Stockholders' Equity [Abstract]  
Underwriter costs $ 1,222,371