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Understanding our Financial Statements and the Impact to the Common Shareholder - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related Party Transaction [Line Items]
Total revenues	$ (2,763)	$ 8,561	$ (15,386)	$ 18,607
Operating Segments | Ben Liquidity
Related Party Transaction [Line Items]
Total revenues	8,497	11,978	17,332	22,827
Operating Segments | Ben Custody
Related Party Transaction [Line Items]
Total revenues	$ 3,081	$ 5,386	$ 7,264	$ 10,768
Customer ExAlt Trusts
Related Party Transaction [Line Items]
Recurring fee, percentage	2.80%		2.80%
Minimum | Customer ExAlt Trusts
Related Party Transaction [Line Items]
Interest rate	5.00%		5.00%
One time fee, percentage	1.00%		1.00%
Maximum | Customer ExAlt Trusts
Related Party Transaction [Line Items]
Interest rate	14.00%		14.00%
One time fee, percentage	7.00%		7.00%

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