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

Summary of Significant Accounting Policies - Expected Subscriber Fees (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies - Expected Subscriber Fees (Details) - Subscriber Accounts
$ in Thousands
Dec. 31, 2018
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2019 $ 185,338
2020 161,949
2021 143,426
2022 130,246
2023 $ 121,634