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

Commitments and Contingencies - Additional Information (Detail)

v3.21.2
Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
Spaces
Jun. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Spaces
Dec. 31, 2019
USD ($)
Number of spaces leased | Spaces     2   2  
Operating lease, Rent expense $ 700 $ 600 $ 1,300 $ 1,200 $ 2,200 $ 2,300
Purchase commitment, Minimum amount commited 0   0   $ 0  
Loss contingency $ 0   $ 0      
December 2023 [Member]            
Operating lease escalating monthly payment         December 2023  
April 2027 [Member]            
Operating lease escalating monthly payment         April 2027  
July 2028 [Member]            
Operating lease escalating monthly payment         July 2028