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

Fair Value Measurement - Summary of Warrants Classified as Equity That Are Measured at Fair Value on Nonrecurring Basis (Detail)

v3.21.2
Fair Value Measurement - Summary of Warrants Classified as Equity That Are Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Nonrecurring [Member] - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Equity:      
Warrants $ 970 $ 970 $ 428
Level 1 [Member]      
Equity:      
Warrants 0 0  
Level 2 [Member]      
Equity:      
Warrants 0 0  
Level 3 [Member]      
Equity:      
Warrants $ 970 $ 970 $ 428