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Sublicense and Collaborative Agreements - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Sep. 01, 2023	Aug. 31, 2020	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Short-term deferred revenue			$ 2,588	$ 791
Long-term deferred revenue			391	2,674
Revenue			486	1,064
Collaborative Arrangement, AffaMed Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Sublicense Fees					$ 400
Unregistered shares of common stock issued (in shares)					7,788
Value unregistered shares of common stock issued					$ 100
Capitalized deferred contract acquisition costs					$ 500
Collaborative Arrangement, AffaMed Agreement \| License
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront license payment		$ 5,000
Maximum milestone payments permitted		$ 172,000
Short-term deferred revenue			1,300	800
Long-term deferred revenue			400	1,400
Revenue			500	900
Negotiation Agreement \| Fuji Pharma
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Short-term deferred revenue			1,300
Revenue			$ 0	$ 0
Collaborative arrangement, termination period option one	14 months
Collaborative arrangement, termination period option two	90 days
Collaborative arrangement, upfront payment	$ 1,500