Income Taxes - Schedule of income tax expense (benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Current:
Federal	$ 0	$ 0	$ 0
State and local	358	601	370
Foreign	1,363	2,493	1,884
Deferred:
Federal	6,510	2,488	(57,065)
State and local	1,986	(227)	(8,131)
Foreign	(600)	(2,945)	(2,569)
Income tax provision (benefit)	$ 9,617	$ 2,410	$ (65,511)