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Investments (Carrying value of other investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Business Combination Separately Recognized Transactions Additional Disclosures [Abstract]
Mortgage loans, net	$ 656,403	$ 639,162
Investments other, amount	679,472	678,254
Other Investments [Member]
Business Combination Separately Recognized Transactions Additional Disclosures [Abstract]
Mortgage loans, net	659,736	657,567
Policy loans	12,079	11,868
Other equity investments	7,657	8,819
Investments other, amount	$ 679,472	$ 678,254

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount before allowance of loans made to policy and contract holders using their life insurance contracts' cash value or separate accounts as collateral. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums over and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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