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

Earnings Per Share (EPS) (Details)

v3.21.2
Earnings Per Share (EPS) (Details) - shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]            
Weighted average unvested restricted stock awards outstanding 2,328,043 114,282 1,438,505 146,109 153,612 424,531