REINUSRANCE - PREDECESSOR COMPANY - Schedule of Reinsurance Included In Statements of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Premiums:
Direct	$ 9,000	$ 22,000	$ 24,000	$ 26,000
Assumed Premiums Earned	0		16,000	38,000
Ceded	(1,000)	(3,000)	(3,000)	(3,000)
Net premiums	8,000	19,000	37,000	61,000
Policy charges and fee income:
Direct	102,000	398,000	439,000	409,000
Policy Charges Assumed	0		819,000	1,566,000
Ceded	(5,000)	(33,000)	(26,000)	(31,000)
Policy charges and fee income	97,000	365,000	1,232,000	1,944,000
Asset management and service fees:
Direct	22,000	71,000	98,000	91,000
Assumed	0		165,000	308,000
Ceded	(2,000)	0	(8,000)	(8,000)
Net asset management and service fees	20,000	71,000	255,000	391,000
Realized investment gains (losses), net:
Direct	312,000		(4,689,000)	(2,208,000)
Assumed	0		12,351,000	(3,131,000)
Reinvestment Gains (Losses) Ceded	169,000		(173,000)	78,000
Total	481,000	(1,907,000)	7,489,000	(5,261,000)
Policyholders' benefits (including change in reserves):
Direct	31,000	247,000	49,000	72,000
Policyholder Benefits and Claims Incurred, Assumed	0		(253,000)	157,000
Ceded	(5,000)	(62,000)	(16,000)	(6,000)
Net policyholders benefits	26,000	185,000	(220,000)	223,000
Interest credited to policyholders’ account balances:
Direct	91,000		175,000	85,000
Assumed	0		477,000	98,000
Ceded	(6,000)		(12,000)	(3,000)
Interest credited to policyholder account balances	85,000	$ 0	640,000	180,000
Net interest credited to policyholders’ account balances	(41,000)		1,694,000	1,036,000
Unaffiliated
Policy charges and fee income:
Ceded	0		13,800	(100)
Interest credited to policyholders’ account balances:
Unaffiliated activity	$ 0		$ 400	$ 2,600