Statutory Information - Summary of Premiums and Deposits Collected (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Insurance [Abstract]
Annuity deposits	$ 462,632	$ 358,900	$ 264,667
Universal life insurance deposits	270,717	267,809	266,600
Traditional life and other premiums	96,429	98,711	95,695
Totals	$ 829,778	$ 725,420	$ 626,962