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

Business and Basis of Presentation - Additional Information (Detail)

v3.21.2
Business and Basis of Presentation - Additional Information (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Nov. 19, 2021
Jun. 17, 2021
Organization Consolidation And Presentation Of Financial Statements [Line Items]            
Net loss $ 27,822 $ 5,028 $ 8,409 $ 3,406    
Net cash used in operating activities $ (15,280) $ (3,647) $ (3,838) $ (1,119)    
Subsequent Event [Member]            
Organization Consolidation And Presentation Of Financial Statements [Line Items]            
Net capital to fund the operations after the acquisition         $ 100,000 $ 400,000