Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Gross unrecognized tax benefits
Gross unrecognized tax benefits at beginning of year	$ 1,284	$ 1,198
Increases for tax positions taken in prior years	81	22
Decreases for tax positions taken in prior years	(12)	(36)
Increases for tax positions taken in the current year	196	116
Lapse in statute of limitations	(27)	(16)
Gross unrecognized tax benefits	$ 1,522	$ 1,284