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Stockholders' Equity - Stock-based Compensation Expense and Valuation Information - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
Class Of Stock [Line Items]          
Total unrecognized compensation cost related to unvested stock option grants $ 0.7   $ 0.7    
Expected term 6 years 6 years 6 years 6 years  
Employee Stock Option          
Class Of Stock [Line Items]          
Total unrecognized compensation cost related, weighted average period     2 years 7 months 20 days    
Restricted stock units (RSUs) [Member]          
Class Of Stock [Line Items]          
Total unrecognized compensation cost related, weighted average period     6 months 7 days    
Restricted stock units (RSUs) [Member] | Maximum [Member]          
Class Of Stock [Line Items]          
Unrecognized stock-based compensation expense         $ 0.1