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

Basis of Presentation and Summary of Significant Accounting Policies - Impairment of long-lived assets (Details)

v3.21.2
Basis of Presentation and Summary of Significant Accounting Policies - Impairment of long-lived assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Basis of Presentation and Summary of Significant Accounting Policies      
Impairment of long-lived assets $ 0 $ 0 $ 0