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Life Insurance Liability (Present Value Expected Net Premiums) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2021 | Mar. 31, 2022 | Mar. 31, 2020
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] |  |  |  |  |
Effect of actual variances from expected variances |  |  | $ 2,580 |  |
Other |  |  | 464,481 |  |
Effect of changes in discount rate assumptions (AOCI) |  |  |  |  | $ 337,022
Balance, end of period |  |  | 123,132 |  |
Life Insurance Segment [Member] | Oxford |  |  |  |  |
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] |  |  |  |  |
Balance, beginning of the year | $ 223,118 | $ 280,371 |  |  |
Beginning balance at original discount rate | 225,071 | 242,741 |  |  |
Effect of changes in cash flow assumptions |  | (932) |  | $ (1,565) |
Adjust beginning of year balance | 224,139 | 241,176 |  |  |
Issuances | 8,491 | 14,118 |  |  |
Interest accrual | 11,185 | 12,131 |  |  |
Net premium collected | (39,509) | (42,354) |  |  |
Ending balance at original discount rate | 204,306 | 225,071 |  |  |
Effect of changes in discount rate assumptions (AOCI) | 1,083 | (1,953) |  |  |
Balance, end of period | $ 205,389 | $ 223,118 |  |  |
Health Insurance Product Line [Member] |  |  |  |  |
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] |  |  |  |  |
Other |  |  | 23,188 |  |
Effect of changes in discount rate assumptions (AOCI) |  |  |  |  | $ 18,341
Balance, end of period |  |  | $ 4,847 |  |

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) (AOCI) from increase (decrease) in expected net premium component of liability for future policy benefit from change in discount rate. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13I -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-13I Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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- Definition Amount, before effect of reinsurance and after current period update of cash flow assumption and discount rate change, of expected net premium component of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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