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

Summary of Significant Accounting Policies - Summary of Changes in Fair Value of the Derivative Warrant Liabilities (Detail)

v3.21.2
Summary of Significant Accounting Policies - Summary of Changes in Fair Value of the Derivative Warrant Liabilities (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]            
Balance at beginning of year $ 1,555 $ 382 $ 545 $ 370 $ 370 $ 150
Change in fair value 241 1,251 12 175 220
Derecognition of liability (1,796)   (1,796)      
Balance at end of year $ 382 $ 382 $ 545 $ 370