Investments, at Fair Value - Continuous Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Total available-for-sale debt securities with unrealized losses	$ 0	$ 1,687
Unrealized Losses, Total available-for-sale debt securities with unrealized losses	0	998
Other debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Less than twelve months	0	0
Fair Value, Twelve months or longer	0	1,687
Unrealized Losses, Less than twelve months	0	0
Unrealized Losses, Twelve months or longer	$ 0	$ 998

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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