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Stockholders' Equity - Schedule of Stock-based Compensation Expense (Details) - USD ($)
 3 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 78,000 $ 156,000
Research and development    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 13,000 26,000
General and administrative    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 65,000 $ 130,000