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Amount of maximum borrowing capacity allowed by FHLB.

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Percentage of ownership interest sold during the period.

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Number of bonus plans.

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Amount of other investments in fund.

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Percentage of indemnity coinsurance.

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Increase in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Nature of Operations and Basis of Presentation (Narrative) (Details) $ / shares in Units, € in Millions, £ in Millions									3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($)	Feb. 02, 2022 USD ($)	Dec. 30, 2021 USD ($)	Nov. 10, 2021 USD ($)	Sep. 28, 2020 GBP (£)	Jun. 15, 2020 USD ($)	May 12, 2020 USD ($)	Apr. 24, 2020	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2022 USD ($) product segment $ / shares	Sep. 30, 2021 USD ($) $ / shares	Dec. 31, 2021 USD ($)	Sep. 30, 2022 GBP (£)	Sep. 30, 2022 EUR (€)	Dec. 31, 2021 GBP (£)	Dec. 31, 2021 EUR (€)	Apr. 02, 2019
Number of reporting segment \| segment											1
Number of Products \| product											6
Number of Bonus Plans \| product											2
Mortgage backed and asset backed securities at fair value	$ 7,700,000								$ 7,700,000		$ 7,700,000
Mortgage servicing rights MSR impairment recovery											900,000
Valuation allowances on mortgage loans													$ 0
Equity securities, Fair Value	9,325,000								9,325,000		9,325,000		21,869,000
Escrow Deposit	344,000								344,000		344,000		3,611,000
Fund investments											48,302,000	$ 58,437,000
Other investments in fund	19,000,000.0								19,000,000.0		19,000,000.0
Other investments in private credit and equipment leases	33,600,000								33,600,000		33,600,000
Gain or loss on investment											0
Pledged assets, market value	37,900,000								37,900,000		37,900,000
FHLB borrowing capacity	34,500,000								34,500,000		34,500,000
Other invested assets	78,569,000								78,569,000		78,569,000		35,293,000
Impairment allowance on investment											0	0	0
Perpetual Preferred Stock	10,000,000.0								10,000,000.0		10,000,000.0		10,000,000.0
Fair value of preferred stock	7,200,000								7,200,000		7,200,000		4,900,000
Warrants Market Value	2,000,000.0								2,000,000.0		2,000,000.0		3,800,000
Impairment on preferred stock									346,000		880,000
Notes receivable	$ 6,189,000								$ 6,189,000		$ 6,189,000		5,960,000
Interest rate	5.00%								5.00%		5.00%			5.00%	5.00%
Valuation allowance on policy loans	$ 0								$ 0		$ 0
Realized gains (losses) on foreign exchange translation									800,000	$ 100,000	1,300,000	100,000
Money market investments	0								0		0
Depreciation									100,000		200,000
Accumulated depreciation	1,300,000								1,300,000		1,300,000		1,100,000
Reinsurance recoverables on unpaid losses, allowance	0								0	$ 0	0	0	0
Unrealized gains (losses)											(14,400,000)		200,000
Unrecognized Tax Benefits	0								$ 0		0
Embedded derivative gains											$ 14,600,000	$ 900,000
Basic Income (loss) per common share \| $ / shares									$ 1.99	$ (0.82)	$ 4.52	$ (2.58)
Other-than-temporary impairment	$ 346,000,000								$ 346,000,000	$ 0	$ 346,000,000	$ 0
BBB+
Interest rate	5.00%								5.00%		5.00%			5.00%	5.00%
Ascona Group Holdings Ltd
Market value	$ 9,300,000								$ 9,300,000		$ 9,300,000		8,700,000
Warrants Market Value	1,900,000								1,900,000		1,900,000
Investment income	1,900,000								1,900,000		1,900,000
Investment income, non-controlling interest											500,000
SRC3
Ownership interest				100.00%
Ascona Asset Holding LLC
Preferred equity \| £					£ 3.6
Ascona Asset Holding LLC \| Ascona Group Holdings Ltd
Preferred equity											3,600,000
PF Collinwood Holdings LLC
Other invested assets	13,900,000								13,900,000		13,900,000		14,500,000
SRC4
Ownership (as a percent)				100.00%
Payments to acquire SRC				$ 21,400,000
Embedded derivative gains										900,000	$ 14,600,000	$ 900,000
Basic Income (loss) per common share \| $ / shares											$ 4.52	$ (2.58)
Python Asset Holding LLC
Fund investments		$ 300,000
Other investments in fund		$ 7,400,000
Ownership (as a percent)		100.00%
United Kingdom, Pounds
Cash held in custody accounts	200,000								200,000		$ 200,000		3,000,000.0	£ 0.2		£ 2.2
Euro Member Countries, Euro
Cash held in custody accounts	100,000								100,000		$ 100,000		10,600,000				€ 9.3
Maximum
Depreciation										$ 100,000		$ 100,000
Maximum \| Euro Member Countries, Euro
Cash held in custody accounts \| €															€ 0.1
Computer Software, Intangible Asset
Useful life of intangible assets											5 years
Capitalized software	1,400,000								1,400,000		$ 1,400,000		1,200,000
Furniture and Fixtures \| Minimum
Useful life											3 years
Furniture and Fixtures \| Maximum
Useful life											7 years
Computer Software, Intangible Asset
Useful life											3 years
Securities Purchase Agreement \| SRC4
Ownership (as a percent)			30.00%
Seneca Re Agreement \| MYGA
Percentage of indemnity coinsurance								25.00%
Seneca Re Agreement \| FIA
Percentage of indemnity coinsurance								40.00%
SRC4
Sale of non controlling interest			$ 15,000,000.0
Embedded derivative gains									$ 11,300,000
Basic Income (loss) per common share \| $ / shares									$ 1.99	$ (0.82)
SRC3
Shares sold, value				5,700,000
Proceeds from capital contribution				$ 5,500,000
American Life and Security National Life Insurance
Net premium income											$ 37,500,000		37,500,000
Net statutory reserves	34,800,000								$ 34,800,000		34,800,000		34,800,000
Amount owed deposit account	2,400,000								2,400,000		$ 2,400,000		$ 2,400,000
American Life and Security National Life Insurance \| US Alliance Agreement \| MYGA
Percentage of multi year guaranteed annuity													20.00%
American Life and Security National Life Insurance \| US Alliance Agreement \| FIA
Percentage of fixed indexed annuity											20.00%		20.00%
SRC4
Net premium income	21,400,000										$ 21,400,000
Net statutory reserves	21,500,000								21,500,000		21,500,000
Amount owed deposit account	$ 21,500,000								21,500,000		$ 21,500,000
SRC4 \| Seneca Re Agreement \| MYGA-5
Percentage of multi year guaranteed annuity	45.00%
Percentage of indemnity coinsurance											45.00%
SRC4 \| Seneca Re Agreement \| MYGA-3
Percentage of multi year guaranteed annuity	10.00%
Percentage of indemnity coinsurance											10.00%
Multi Year Guaranteed Annuity
Number of Products \| product											2
Multi Year Guaranteed Annuity \| SRC3
Percentage of indemnity coinsurance				45.00%
Multi Year Guaranteed Annuity \| Crestline Assurance Holdings LLC \| Master Letter Agreement
Percentage of indemnity coinsurance								25.00%
Fixed Index Annuity
Number of Products \| product											2
Fixed Index Annuity \| SRC3
Percentage of indemnity coinsurance				45.00%
Fixed Index Annuity \| Crestline Assurance Holdings LLC \| Master Letter Agreement
Percentage of indemnity coinsurance								40.00%
Exchange Traded Funds
Equity securities, Fair Value	$ 9,300,000								$ 9,300,000		$ 9,300,000		$ 21,900,000
ORIX USA \| SRC4
Ownership (as a percent)			30.00%										30.00%			30.00%	30.00%
Sale of non controlling interest											$ 15,000,000.0		$ 15,000,000.0
Percentage of ownership interest sold													70.00%
ORIX USA \| Securities Purchase Agreement
Percentage of ownership interest sold			70.00%
ORIX USA \| SRC4
Percentage of ownership interest sold			70.00%
American Life \| PF Collinwood Holdings LLC
Ownership (as a percent)	100.00%								100.00%		100.00%			100.00%	100.00%
Investment Manager
Other investments in fund	$ 45,000,000.0								$ 45,000,000.0		$ 45,000,000.0
Other invested assets	$ 78,600,000								$ 78,600,000		$ 78,600,000
1505 Capital LLC
Ownership percentage acquired						49.00%												51.00%
1505 Capital LLC \| 1505 Capital LLC
Business Combination, Consideration Transferred						$ 500,000
American Life \| Ascona Group Holdings Ltd
Ownership interest	74.00%								74.00%		74.00%			74.00%	74.00%
Seneca Reinsurance Company, LLC
Contributions made							$ 300,000
Ownership percentage acquired							100.00%
Crestline Assurance Holdings LLC \| Ascona Group Holdings Ltd
Ownership interest	26.00%								26.00%		26.00%			26.00%	26.00%