v3.26.1
Stock-based compensation - Compensation Expense Recognized Under 2024 Plan (Details) - Equity IncEquity Incentive Plan 2024 [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Stock-based compensation [Abstract]    
Compensation expense $ 798 $ 730
Research and Development Expenses [Member]    
Stock-based compensation [Abstract]    
Compensation expense 218 216
General and Administrative Expenses [Member]    
Stock-based compensation [Abstract]    
Compensation expense $ 580 $ 514