Income Taxes - Changes in Valuation Allowance (Details) - Valuation Allowance - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance at beginning of year	$ (624)	$ 0	$ 0
Increases recorded	(6,781)	(624)	0
Valuation allowance at end of year	$ (7,405)	$ (624)	$ 0