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

Employee Benefit Plan - Additional Information (Detail)

v3.21.2
Employee Benefit Plan - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Aurora Four Hundred And One k Plan [Member]        
Defined contribution plan, Employer discretionary contribution amount $ 0 $ 0 $ 0 $ 100