Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Gross unrecognized tax benefits
Gross unrecognized tax benefits at beginning of year	$ 1,198	$ 1,079
Increases for tax positions taken in prior years	22	0
Decreases for tax positions taken in prior years	(36)	(29)
Increases for tax positions taken in the current year	116	159
Lapse in statute of limitations	(16)	(11)
Gross unrecognized tax benefits at end of year	$ 1,284	$ 1,198