Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Warrants (Parenthetical) (Detail)

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Stockholders' Equity - Schedule of Warrants (Parenthetical) (Detail)
9 Months Ended
Mar. 31, 2021
$ / shares
shares
Common Stock Warrants [Member]  
Class of warrant or right, expired warrants exercisable, per share | $ / shares $ 30.00
2020 Investor Warrant [Member]  
Investor warrants exercised 4,399,000
Warrants exercise price | $ / shares $ 1.00
Exercise of warrants, shares 472,000
Number of common shares called by warrants exercise 258,000