Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement Of Stockholders Equity Parenthetical [Abstract]
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, tax	$ 0	$ 0	$ 0
Other comprehensive income (loss), tax	0	0	$ 0
Warrant exercises, net of income taxes	$ 0	$ 0