Life Insurance Liabilities (Present Value Expected Net Premiums) (Details) - Life Insurance Segment [Member] - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024	Mar. 31, 2023
Liability For Future Policy Benefit Expected Net Premium [Roll Forward]
Balance, beginning of the year	$ 522,122	$ 530,983
Beginning balance at original discount rate	514,113	533,688
Effect of actual variances from expected variances			$ 715	$ 187
Adjust beginning of year balance			$ 203,591	$ 224,884
Issuances	4,780	5,072
Interest accrual	12,587	13,166
Net premium collected	18,397	19,833
Ending balance at original discount rate	503,527	523,780
Effect of changes in discount rate assumptions (AOCI)	4,091	1,650
Balance, end of period	$ 190,881	$ 214,027