Reinsurance and Policy Benefits and Losses, Claims and Loss Expenses Payable (Insurance Subsidiaries Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Year ended December 31,
Net amount (a)	$ 83,707	$ 89,745	$ 99,149
Life Insurance [Member]
Year ended December 31,
Direct amount (a) - Life insurance in force	857,756	909,894	970,454
Ceded to other companies - Life insurance in force	47	48	48
Assumed from other companies - Life insurance in force	246,552	278,445	304,891
Net amount (a) - Life insurance in force	$ 1,104,261	$ 1,188,291	$ 1,275,297
Percentage of amount assumed to net - Life insurance in force	22.00%	23.00%	24.00%
Direct amount (a)	$ 177,431	$ 179,467	$ 189,974
Ceded to Other Companies	84	96	153
Assumed from Other Companies	5,260	5,176	5,570
Net amount (a)	182,607	184,547	195,391
Premiums earned: Life [Member] \| Life Insurance [Member]
Year ended December 31,
Direct amount (a)	46,038	49,184	52,298
Ceded to Other Companies		1	1
Assumed from Other Companies	4,519	4,183	4,181
Net amount (a)	$ 50,557	$ 53,366	$ 56,478
Percentage of amount assumed to net	9.00%	8.00%	7.00%
Premiums earned: Accident and health [Member] \| Life Insurance [Member]
Year ended December 31,
Direct amount (a)	$ 32,239	$ 35,324	$ 41,354
Ceded to Other Companies	84	95	152
Assumed from Other Companies	590	844	983
Net amount (a)	$ 32,745	$ 36,073	$ 42,185
Percentage of amount assumed to net	2.00%	2.00%	2.00%
Premiums earned: Annuity [Member] \| Life Insurance [Member]
Year ended December 31,
Direct amount (a)	$ 254	$ 157	$ 80
Assumed from Other Companies	151	149	406
Net amount (a)	$ 405	$ 306	$ 486
Percentage of amount assumed to net	37.00%	49.00%	84.00%
Premiums earned: Property and casualty [Member] \| Life Insurance [Member]
Year ended December 31,
Direct amount (a)	$ 98,900	$ 94,802	$ 96,242
Net amount (a)	$ 98,900	$ 94,802	$ 96,242

Amount of life insurance issued and outstanding assumed from other entity, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column D
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column D))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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Amount of life insurance issued and outstanding ceded to other entity, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column C
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column C))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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Amount, before effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column B
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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Amount, after effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column E
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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Percentage of assumed life insurance contract issued and outstanding to life insurance contract issued and outstanding after effect of reinsurance, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column F
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column F))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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Represents the monetary amount of direct premiums earned (unearned) during the indicated time period.

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Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

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Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
-Section S99
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

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Percentage of assumed premium earned to premium earned after effects of reinsurance, as disclosed in supplementary reinsurance information.

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