Reinsurance - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jan. 01, 2022	Dec. 31, 2021
Effects Of Reinsurance [Line Items]
Transaction to initial ceded premium					$ 6,500
Fixed-Rate Annuity | Policyholder Account Balances
Effects Of Reinsurance [Line Items]
Reserves related to fixed-rate annuity deposits	$ 70,762		$ 70,762			$ 71,832
Other Income
Effects Of Reinsurance [Line Items]
Net policy charges on universal life products	$ 46	$ 45	$ 92	$ 90