General form of registration statement for all companies including face-amount certificate companies

Debt and Other Financing - Schedule of Common Stock and Warrants Issued Under 2021 Bridge Financing (Detail)

v3.21.2
Debt and Other Financing - Schedule of Common Stock and Warrants Issued Under 2021 Bridge Financing (Detail)
 9 Months Ended
Sep. 30, 2021
shares
 [1]
Schedule of Common Stock and Warrants Issued Under Two Thousand and Twenty One Bridge Financing [Line Items]  
Stock Issued During Period Shares Bridge Financing 20,343
Class of Warrants or Rights Issued During Period 3,924
Silicon Valley Bank Guarantors [Member]  
Schedule of Common Stock and Warrants Issued Under Two Thousand and Twenty One Bridge Financing [Line Items]  
Stock Issued During Period Shares Bridge Financing 8,485
Class of Warrants or Rights Issued During Period 0
Tranche One Of Bridge Notes [Member]  
Schedule of Common Stock and Warrants Issued Under Two Thousand and Twenty One Bridge Financing [Line Items]  
Stock Issued During Period Shares Bridge Financing 11,544
Class of Warrants or Rights Issued During Period 3,873
Rights Offering [Member]  
Schedule of Common Stock and Warrants Issued Under Two Thousand and Twenty One Bridge Financing [Line Items]  
Stock Issued During Period Shares Bridge Financing 314
Class of Warrants or Rights Issued During Period 51
[1] Issuance of class A common stock and class A common stock has been retroactively restated to give effect to the reverse recapitalization.