Business and Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ (10,001)	$ (10,460)	$ (24,577)	$ (21,808)
Net cash used in operating activities			(14,360)	(18,582)
Cash and cash equivalents	7,951	$ 23,149	7,951	$ 23,149	$ 15,527
Accumulated deficit	(242,146)		(242,146)		$ (209,236)
Working capital	$ 8,500		$ 8,500
Number of anti-dilutive shares (in shares)	4,776,610	3,366,373	2,481,914	3,146,131