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Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)

v3.20.4
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2020
Jan. 31, 2020
Statement of Stockholders' Equity [Abstract]
Underwriter costs $ 1,222,371 $ 1,222,371