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

Summary of Significant Accounting Policies - Summary of Allowance For Doubtful Accounts (Detail)

v3.21.2
Summary of Significant Accounting Policies - Summary of Allowance For Doubtful Accounts (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 period $ 1,012 $ 1,060 $ 1,070 $ 1,038 $ 1,038 $ 175
Additions 296 236 378 397 591 1,014
Write – offs (63) (14) (64) (14) (559) (151)
Recoveries (80) (179) (219) (318)    
Balance at end of year $ 1,165 $ 1,103 $ 1,165 $ 1,103 $ 1,070 $ 1,038