Policyholder Obligations - Liability for Additional Insurance Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Additional Liability, Long-Duration Insurance [Roll Forward]
Beginning balance		$ 115,151	$ 119,374
Interest accrual	$ 1,297	3,277
Ending balance	151,787	118,645	115,151
Gross Assessments	15,679	11,625
Interest Expenses	1,297	3,277
Domestic Universal Life
Additional Liability, Long-Duration Insurance [Roll Forward]
Beginning balance	63,804	54,097	45,136
Beginning balance before shadow reserve adjustments	63,804	54,097
Effect of changes in cash flow assumptions			0	$ 0
Effect of actual variances from expected experience			2,328	5,695
Adjusted beginning of period balance			56,425	69,499	$ 52,197
Issuances	0	0	0
Interest accrual	362	1,833	4,767
Assessments collected	10,713	7,909	14,775
Benefit payments	(13,595)	(8,806)	(17,687)
Derecognition (lapses and withdrawals)	(3)	(17)	45
Ending balance before shadow reserve adjustments	66,976	57,344	54,097
Effect of shadow reserve adjustments	0	0	0
Ending balance	66,976	57,344	54,097
Less reinsurance recoverable	0	0	0		0
Net additional liability, after reinsurance recoverable	66,976	57,344	54,097		45,136
Gross Assessments	10,713	7,909
Interest Expenses	362	1,833	4,767
International Universal Life
Additional Liability, Long-Duration Insurance [Roll Forward]
Beginning balance	46,402	48,336	63,046
Beginning balance before shadow reserve adjustments	46,402	48,336
Effect of changes in cash flow assumptions			0	0
Effect of actual variances from expected experience			3,479	(1,283)
Adjusted beginning of period balance			51,815	45,119	48,522
Issuances	0	0	0
Interest accrual	193	1,048	3,264
Assessments collected	4,996	3,769	8,304
Benefit payments	(3,351)	(8,643)	(10,565)
Derecognition (lapses and withdrawals)	(937)	(184)	(1,189)
Ending balance before shadow reserve adjustments	46,020	47,805	48,336
Effect of shadow reserve adjustments	0	0	0
Ending balance	46,020	47,805	48,336
Less reinsurance recoverable	0	0	0		0
Net additional liability, after reinsurance recoverable	46,020	47,805	48,336		$ 63,046
Gross Assessments	4,996	3,769
Interest Expenses	193	1,048	3,264
Annuities
Additional Liability, Long-Duration Insurance [Roll Forward]
Ending balance	38,791	13,496
Annuities Netting
Additional Liability, Long-Duration Insurance [Roll Forward]
Beginning balance	38,502	12,718
Beginning balance before shadow reserve adjustments	38,502	12,718
Effect of changes in cash flow assumptions			0	0
Effect of actual variances from expected experience			1,202	652
Adjusted beginning of period balance			13,920	$ 39,154
Issuances	0	0
Interest accrual	742	396
Assessments collected	(30)	(53)
Benefit payments	(1,056)	(758)
Derecognition (lapses and withdrawals)	(19)	(9)
Ending balance before shadow reserve adjustments	38,791	13,496	12,718
Effect of shadow reserve adjustments	0	0
Ending balance	38,791	13,496	$ 12,718
Less reinsurance recoverable	(38,791)	(13,496)
Net additional liability, after reinsurance recoverable	0	0
Gross Assessments	(30)	(53)
Interest Expenses	$ 742	$ 396