Net Loss Per Share - Summary of Number of Ordinary Shares Excluded from Computation of Earnings Per Share (Detail) (Parenthetical) - $ / shares	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants		$ 0.04
Conversion Of Senior Convertible Notes 226.80 [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants	$ 226.80		$ 226.80
Exercise Of Warrants At $645.60 per share [member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants	645.60		645.60
Exercise Of Warrants At $375.00 Per Shares [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants	375.00		375.00
Exercise of 2021 Consent Warrants at 160.00 Per Share [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants	160.00		160.00
Exercise Of 2022 Consent Warrants At 30 Per Share [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Exercise price of warrants	$ 30.00		$ 30.00