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Stockholders' Equity - Additional Information (Detail) - $ / shares
 6 Months Ended
Sep. 30, 2023
Mar. 31, 2023
Subsidiary or Equity Method Investee [Line Items]    
Preferred stock, par value (in dollars per share) $ 0.0001  
Common stock, authorized (in shares) 500,000,000 500,000,000
Common stock, issued (in shares) 131,442,024 130,329,863
Common stock, outstanding (in shares) 131,442,024 130,329,863
Equity Inducement Plan 2023    
Subsidiary or Equity Method Investee [Line Items]    
Number of shares issued in transaction (in shares) 5,000,000  
Stock Options Not Settled    
Subsidiary or Equity Method Investee [Line Items]    
Units outstanding (in shares) 199,694  
Restricted Stock Units Vested And Not Settled (Not Unvested)    
Subsidiary or Equity Method Investee [Line Items]    
Units outstanding (in shares) 577,302  
Series A  preferred stock    
Subsidiary or Equity Method Investee [Line Items]    
Preferred stock, issued (in shares) 10,000 10,000
Preferred stock, outstanding (in shares) 10,000 10,000
Share of common stock (in shares) 1  
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Liquidation amount per share (in dollars per share) $ 0.01  
Preferred stock, authorized (in shares) 10,000 10,000
Series A  preferred stock | Maximum    
Subsidiary or Equity Method Investee [Line Items]    
Percentage of voting power of outstanding shares 25.00%  
Roivant Sciences Ltd. | Series A  preferred stock    
Subsidiary or Equity Method Investee [Line Items]    
Preferred stock, issued (in shares) 10,000  
Preferred stock, outstanding (in shares) 10,000  
Preferred stock, par value (in dollars per share) $ 0.0001  
Preferred Stock    
Subsidiary or Equity Method Investee [Line Items]    
Preferred stock, issued (in shares) 0  
Preferred stock, outstanding (in shares) 0  
Preferred stock, authorized (in shares) 10,010,000  
Common stock    
Subsidiary or Equity Method Investee [Line Items]    
Common stock, authorized (in shares) 500,000,000  
Common stock, par value (in dollars per share) $ 0.0001  
Common stock, issued (in shares) 131,442,024  
Common stock, outstanding (in shares) 131,442,024