Stockholders' Equity / (Deficit) - Additional Information (Detail) - $ / shares	Sep. 30, 2021	Feb. 24, 2021	Jun. 14, 2021	Mar. 31, 2021
Class of Stock [Line Items]
Shares issued on settlement	200,000
Common Class A [Member]
Class of Stock [Line Items]
Common stock, shares, outstanding	155,022,167		152,270,401
Common Class A [Member] | Amended and Restated Certificate of Incorporation [Member]
Class of Stock [Line Items]
Common stock voting rights	one
Common Class B [Member]
Class of Stock [Line Items]
Common stock, shares, outstanding	37,856,095			37,856,095
Common Class B [Member] | Amended and Restated Certificate of Incorporation [Member]
Class of Stock [Line Items]
Common stock voting rights	ten
Series A Redeemable Convertible Preferred Shares [Member]
Class of Stock [Line Items]
Preferred stock, convertible, conversion price, decrease		$ 0.073587
Preferred stock, convertible, conversion price, increase		$ 0.59
Series A Redeemable Convertible Preferred Shares [Member] | Restricted Stock [Member]
Class of Stock [Line Items]
Number of shares forfeited during the period.		16,655,197