Investments - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 0	$ 0	$ 0	$ 0
Securities fair value		23,628	22,861
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	5,351	3,994	5,351
Debt Securities, Available for sale, Unrealized Loss Position, Accumulated Loss, Including Pledged Securities		$ 85,304
Average Percentage of Unrealized Loss Versus Amortized Cost for Investment Grade Securities		6.00%
Fiduciary Funds Held by Insurance Distribution Subsidiaries		$ 2,210	2,845
Fixed Income Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	5,351	3,994
Fixed Income Securities [Member] | Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position		51,803	70,396
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,905	3,153	3,905
Fixed Income Securities [Member] | Corporate Debt Securities [Member] | External Credit Rating, Investment Grade
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		3,153
Fixed Income Securities [Member] | Residential Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position		1,899	2,446
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	29	18	29
Fixed Income Securities [Member] | Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position		848	1,428
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	$ 2	$ 2	$ 2