Deferred Policy Acquisition Costs, Net (Schedule of Deferred Policy Acquisition Costs (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 121,729	$ 121,224
Capitalization	9,250	15,369
Amortization expense	(14,801)	(13,578)
Balance, end of year	116,178	123,015
Payout Annuities
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	60,480	54,747
Capitalization	6,810	12,561
Amortization expense	(8,414)	(6,679)
Balance, end of year	58,876	60,629
Life Insurance
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	57,986	62,426
Capitalization	2,375	2,716
Amortization expense	(5,794)	(6,260)
Balance, end of year	54,567	58,882
Health Insurance
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	3,263	4,051
Capitalization	65	92
Amortization expense	(593)	(639)
Balance, end of year	$ 2,735	$ 3,504