Accounting Pronouncements - Impacts to Previously Reported Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Deferred policy acquisition costs	$ 171,417			$ 159,104			$ 171,417	$ 159,104	$ 162,927	$ 152,418	$ 143,123
Cost of insurance acquired	10,182			10,822			10,182	10,822	10,647	11,268
Assets	1,564,640						1,564,640		1,590,703
Life insurance	1,147,601			1,190,502			1,147,601	1,190,502	1,198,647
Fixed Annuity Liability											81,730
Annuities (policyholders' funds)	129,909			118,452			129,909	118,452	121,422
Other policyholders' funds	7,218						7,218		7,501
Deferred federal income tax liability	2,097						2,097		3,653
Liabilities	1,411,893						1,411,893		1,462,913
Retained earnings (accumulated deficit)	31,332						31,332		16,309
Accumulated other comprehensive income (loss)	(126,667)						(126,667)		(137,044)
Stockholders' equity	152,747	$ 146,846	$ 154,291	111,045	$ 123,324	$ 125,476	152,747	111,045	127,790	99,957
Income Statement [Abstract]
Increase (decrease) in future policy benefit reserves	(3,880)			653			(5,802)	4,497
Policyholder liability remeasurement (gain) loss	1,024			396			2,860	1,731
Amortization of deferred policy acquisition costs	4,056			3,624			11,544	10,651
Amortization of cost of insurance acquired	151			166			465	446
Federal income tax expense (benefit)	1,943			1,415			3,704	3,618
Net income (loss)	2,698	6,126	4,872	3,407	2,492	6,449	13,696	12,348
Unrealized holding gains (losses) arising during period	(59,817)			(88,382)			(36,811)	(340,678)
Change in current discount rate for liability for future policy benefits	60,054			73,214			45,825	345,258
Income tax expense (benefit) on other comprehensive income items	(1,040)			(184)			(882)	6,162
Other comprehensive income (loss)	1,696	(12,898)	21,579	(14,941)	(3,752)	17,189	10,377	(1,504)
Total comprehensive income (loss)	4,394	$ (6,772)	$ 26,451	(11,534)	$ (1,260)	$ 23,638	24,073	10,844
Life Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs	117,800			110,856			117,800	110,856	113,484	107,702	103,064
Cost of insurance acquired	1,375			1,490			1,375	1,490	1,461	1,584
Fixed Annuity Liability											60,027
Income Statement [Abstract]
Amortization of deferred policy acquisition costs							9,642	9,051
Home Service Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs	53,617			48,248			53,617	48,248	49,443	44,716	40,059
Cost of insurance acquired	$ 8,807			$ 9,332			8,807	9,332	9,186	$ 9,684
Fixed Annuity Liability											21,703
Income Statement [Abstract]
Amortization of deferred policy acquisition costs							$ 1,902	$ 1,600
Common Stock Class A [Member]
Income Statement [Abstract]
Earnings Per Share, Basic	$ 0.06			$ 0.07			$ 0.28	$ 0.25
Earnings Per Share, Diluted	$ 0.05			$ 0.06			$ 0.27	$ 0.24
Previously Reported
Statement of Financial Position [Abstract]
Deferred policy acquisition costs									140,167		104,913
Cost of insurance acquired									10,260
Deferred tax asset, net									2,414
Assets									1,569,970
Life insurance									1,305,506
Fixed Annuity Liability									91,234		78,304
Annuities (policyholders' funds)									0
Other policyholders' funds									40,497
Deferred federal income tax liability									0
Liabilities									1,568,927
Retained earnings (accumulated deficit)									(52,203)
Accumulated other comprehensive income (loss)									(195,279)
Stockholders' equity									1,043
Income Statement [Abstract]
Increase (decrease) in future policy benefit reserves				$ 7,090				$ 23,037
Policyholder liability remeasurement (gain) loss				0				0
Amortization of deferred policy acquisition costs				7,082				18,869
Amortization of cost of insurance acquired				276				775
Federal income tax expense (benefit)				344				622
Net income (loss)				(5,131)				(10,012)
Unrealized holding gains (losses) arising during period				(89,713)				(343,989)
Change in current discount rate for liability for future policy benefits				0				0
Income tax expense (benefit) on other comprehensive income items				5,079				18,880
Other comprehensive income (loss)				(84,591)				(325,031)
Total comprehensive income (loss)				$ (89,722)				$ (335,043)
Previously Reported | Life Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs											94,771
Fixed Annuity Liability											60,027
Previously Reported | Home Service Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs											10,142
Fixed Annuity Liability											18,277
Previously Reported | Common Stock Class A [Member]
Income Statement [Abstract]
Earnings Per Share, Basic				$ (0.10)				$ (0.20)
Earnings Per Share, Diluted				$ (0.10)				$ (0.20)
Revision of Prior Period, Accounting Standards Update, Adjustment
Statement of Financial Position [Abstract]
Deferred policy acquisition costs									22,760		38,175
Cost of insurance acquired									387
Deferred tax asset, net									(2,414)
Assets									20,733
Life insurance									(106,859)
Fixed Annuity Liability									(91,234)		3,426
Annuities (policyholders' funds)									121,422
Other policyholders' funds									(32,996)
Deferred federal income tax liability									3,653
Liabilities									(106,014)
Retained earnings (accumulated deficit)									68,512
Accumulated other comprehensive income (loss)									58,235
Stockholders' equity									$ 126,747
Income Statement [Abstract]
Increase (decrease) in future policy benefit reserves				$ (6,437)				$ (18,540)
Policyholder liability remeasurement (gain) loss				396				1,731
Amortization of deferred policy acquisition costs				(3,458)				(8,218)
Amortization of cost of insurance acquired				(110)				(329)
Federal income tax expense (benefit)				1,071				2,996
Net income (loss)				8,538				22,360
Unrealized holding gains (losses) arising during period				1,331				3,311
Change in current discount rate for liability for future policy benefits				73,214				345,258
Income tax expense (benefit) on other comprehensive income items				4,895				25,042
Other comprehensive income (loss)				69,650				323,527
Total comprehensive income (loss)				$ 78,188				$ 345,887
Revision of Prior Period, Accounting Standards Update, Adjustment | Life Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs											8,270
Fixed Annuity Liability											0
Revision of Prior Period, Accounting Standards Update, Adjustment | Home Service Insurance:
Statement of Financial Position [Abstract]
Deferred policy acquisition costs											29,905
Fixed Annuity Liability											$ 3,426
Revision of Prior Period, Accounting Standards Update, Adjustment | Common Stock Class A [Member]
Income Statement [Abstract]
Earnings Per Share, Basic				$ 0.17				$ 0.45
Earnings Per Share, Diluted				$ 0.16				$ 0.44