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

Stock Option Plan and Stock-Based Compensation - Stock-Based Compensation Associated with Awards (Details)

v3.21.2
Stock Option Plan and Stock-Based Compensation - Stock-Based Compensation Associated with Awards (Details)
Jun. 30, 2021
Dec. 31, 2020
DLOM    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation, measurement input 0.235 0.285