Deferred Policy Acquisition Costs Net Long Duration Contracts (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	$ 128,463	$ 131,430
Capitalization	3,178	7,398
Amortization expense	(5,518)	(5,854)
Other, including experience	(2,527)	(1,818)
Balance, end of the year	123,596	131,156
Deferred liabilities
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	55,396	55,261
Capitalization	1,951	4,935
Amortization expense	(3,384)	(3,584)
Other, including experience	(1,632)	(2,362)
Balance, end of the year	52,331	54,250
Life Insurance
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	66,954	67,573
Capitalization	1,166	2,340
Amortization expense	(1,944)	(2,030)
Other, including experience	(327)	852
Balance, end of the year	65,849	68,735
Health Insurance
Movement Analysis Of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of year	6,113	8,596
Capitalization	61	123
Amortization expense	(190)	(240)
Other, including experience	(568)	(308)
Balance, end of the year	$ 5,416	$ 8,171