Income Taxes - Schedule of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Deferred tax assets, future policy benefit reserves and unpaid policy claims	$ 428,438	$ 353,677
Net operating loss and interest carryforwards	28,675	36,343
Deferred tax assets, investments	59,085
Deferred tax assets, future deductible liabilities	23,217	20,883
Deferred tax assets, foreign tax credits	36,424	46,455
Deferred tax assets, other	23,809	27,610
Total deferred tax assets before valuation allowance	599,648	484,968
Valuation allowance	(36,511)	(46,542)
Total deferred tax assets after valuation allowance	563,137	438,426
Deferred tax liabilities:
Deferred tax liabilities, deferred policy acquisition costs	(385,351)	(383,163)
Renewal commissions receivable	(53,874)	(60,782)
Intangibles	(47,806)	(50,310)
Investments	0	(17,952)
Deferred tax liabilities, reinsurance deposit asset	(47,118)	(48,587)
Deferred tax liabilities, other	(19,112)	(21,833)
Total deferred tax liabilities	(553,261)	(582,627)
Net deferred tax liabilities	$ (9,876)	$ (144,201)