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

Fair Value Measurement - Schedule of Quantitative Information Regarding Warrant Liability (Detail)

v3.21.2
Fair Value Measurement - Schedule of Quantitative Information Regarding Warrant Liability (Detail) - Warrant Liabilities [Member]
Jun. 30, 2021
$ / shares
Dec. 31, 2020
$ / shares
Dec. 31, 2019
$ / shares
Fair value of the Company's common stock [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 14.61 4.19 3.57
Risk-free interest rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 0.13 0.13 1.81
Expected volatility factor [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Measurement Input 68.3 68.4 45.0
Remaining contractual term (in years) [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants and Rights Outstanding, Term 4 years 2 months 12 days 4 years 8 months 12 days 3 years