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Capitalization - Schedule of Temporary Equity (Detail)
12 Months Ended
Dec. 31, 2020
$ / shares
Series A Preferred Stock [Member]  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate $ 0.01
Issue Price 0.09
Series B Preferred Stock [Member]  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate 0.01
Issue Price 0.20
Series C Preferred Stock [Member]  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate 0.02
Issue Price 0.37
Series D Preferred Stock [Member]  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate 0.19
Issue Price 3.15
Series E preferred stock  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate 0.21
Issue Price 3.48
Series E-1 Preferred Stock  
Schedule Of Capitalization Equity [Line Items]  
Dividend Rate 0.21
Issue Price $ 3.48