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

Basis of Presentation and Summary of Significant Accounting Policies - Debt issuance costs (Details)

v3.21.2
Basis of Presentation and Summary of Significant Accounting Policies - Debt issuance costs (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Debt issuance costs $ 1.4 $ 0.9
New revolving credit facility    
Debt Instrument [Line Items]    
Debt issuance costs $ 0.9