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

Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)

v3.21.2
Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Warrant Liabilities [Member]      
Liabilities:      
Warrant liability $ 13,600 $ 4,007 $ 197
Warrant Liabilities [Member] | Level 3 [Member]      
Liabilities:      
Warrant liability 13,600 $ 4,007 $ 197
Contingent Interest Embedded Derivative [Member]      
Assets:      
Contingent interest embedded derivative (classified within long-term debt, non-current) 8,922    
Contingent Interest Embedded Derivative [Member] | Level 3 [Member]      
Assets:      
Contingent interest embedded derivative (classified within long-term debt, non-current) $ 8,922