Fair Value Measurements - Summary of Fair Value Measurement Inputs and Valuation Techniques (Detail)
Sep. 30, 2021
yr
$ / shares
Dec. 31, 2020
yr
$ / shares
Aug. 17, 2020
yr
$ / shares
Volatility | Maximum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input   25.5 25
Volatility | Maximum [Member] | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 13.3 25.5  
Volatility | Minimum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input   10 10
Volatility | Minimum [Member] | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 10 10  
Stock price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Stock price   $ 10.89  
Stock price | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Stock price $ 9.84 $ 10.54  
Stock price | Maximum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Stock price     $ 10.12
Stock price | Minimum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Stock price     $ 9.89
Time to M&A      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input | yr   1 1
Time to M&A | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input | yr 0.44 1  
Risk-free rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input   0.48 0.39
Risk-free rate | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 1.05 0.48  
Dividend yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input   0.0 0.0
Dividend yield | Level 3 [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 0.0 0.0