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Investments, at Fair Value - Debt Securities, Allowance for Credit Loss (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |  |  |
Beginning balance | $ 31,290 | $ 31,290 | $ 31,290 | $ 18,669
Increase in amounts previously recognized | 0 | 0 | 0 | 12,621
Ending balance | $ 31,290 | $ 31,290 | $ 31,290 | $ 31,290

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- Definition The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity). + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-8B Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8B -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-8B + Details
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- Definition Amount of increase (decrease) in the cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-8B + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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