Life Insurance Liabilities (Present Value Expected Future Policy Benefits) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Claims And Claims Adjustment Expense	$ 829,992	$ 838,945
Moving and Storage Consolidations [Member]
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Claims And Claims Adjustment Expense	313,439	317,409
Property and Casualty Insurance [Member]
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Claims And Claims Adjustment Expense	129,530	148,467
Life Insurance Segment [Member]
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Balance, beginning of year	205,389	223,118
Beginning balance at original discount rate	204,306	225,071
Effect of actual variances from expected experience			$ 4,279	$ 1,621
Adjusted beginning of year balance			$ 202,073	$ 224,487
Issuances	7,353	6,746
Interest accrual	18,888	19,830
Net premium collected	39,689	39,544
Ending balance at original discount rate	496,386	519,099
Effect of changes in discount rate assumptions (AOCI)	13,778	19,397
Balance, end of the year	510,164	499,702
End of period, LFPB, net	317,153	296,846
Life Insurance Segment [Member] | Oxford
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Claims And Claims Adjustment Expense	387,023	373,069
Payout annuities and market risk benefits
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Future Policy Benefits	24,752	31,048
Health Insurance Product Line [Member]
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Future Policy Benefits	11,598	11,621
Life and annuity claims in course of settlement and claims incurred but not yet reported / Reinsurance losses payable
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Future Policy Benefits	24,527	23,724
Life DPL / Other life and health
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Future Policy Benefits	8,941	9,556
LFPB flooring effect
Liability For Future Policy Benefit Expected Future Policy Benefit [Roll Forward]
Liability For Future Policy Benefits	$ 52	$ 274