Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Warrants (Detail)

v3.22.2.2
Stockholders' Equity - Schedule of Warrants (Detail) - Common Stock Warrants [Member]
3 Months Ended
Sep. 30, 2022
$ / shares
shares
Balance - June 30, 2022 | shares 36,024,000
Balance - September 30, 2022 | shares 35,704,000
Beginning balance | $ / shares $ 0.99
Ending balance | $ / shares $ 0.88
2018 Investor Warrants [Member]  
Expiry of warrants | shares (280,000)
Expired | $ / shares $ 12.50
2018 Agent Warrants [Member]  
Expiry of warrants | shares (40,000)
Expired | $ / shares $ 12.50