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Stockholders' Equity - Schedule of Stock-based Compensation Expense (Details) - USD ($)
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 532,000 $ 1,508,000
Research and development    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 86,000 138,000
General and administrative    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 446,000 $ 1,370,000