Schedule IV - Reinsurance Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Life insurance face in force
Gross Amount	$ 20,888,431	$ 21,954,160	$ 23,299,829
Ceded to Other Companies	3,781,167	4,013,073	4,252,828
Assumed from Other Companies	0	0	0
Net amount	$ 17,107,264	$ 17,941,087	$ 19,047,001
Percentage of Amount Assumed to Net	0.00%	0.00%	0.00%
Premiums:
Gross Amount	$ 96,268	$ 98,554	$ 96,077
Ceded to Other Companies	6,419	6,217	6,041
Assumed from Other Companies	194	205	212
Net amount	$ 90,043	$ 92,542	$ 90,248
Percentage of Amount Assumed to Net	0.20%	0.20%	0.20%
Life insurance
Premiums:
Gross Amount	$ 92,891	$ 95,579	$ 92,844
Ceded to Other Companies	6,419	6,217	6,041
Assumed from Other Companies	194	205	212
Net amount	$ 86,666	$ 89,567	$ 87,015
Percentage of Amount Assumed to Net	0.20%	0.20%	0.20%
Accident and health insurance
Premiums:
Gross Amount	$ 3,346	$ 2,956	$ 3,214
Ceded to Other Companies	0	0	0
Assumed from Other Companies	0	0	0
Net amount	$ 3,346	$ 2,956	$ 3,214
Percentage of Amount Assumed to Net	0.00%	0.00%	0.00%
Annuities
Premiums:
Gross Amount	$ 31	$ 19	$ 19
Ceded to Other Companies	0	0	0
Assumed from Other Companies	0	0	0
Net amount	$ 31	$ 19	$ 19
Percentage of Amount Assumed to Net	0.00%	0.00%	0.00%