Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.20.2
Stockholders' Equity - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended 12 Months Ended
Jun. 15, 2020
May 31, 2019
Mar. 31, 2019
Mar. 31, 2020
May 31, 2020
May 14, 2020
Subsidiary or Equity Method Investee [Line Items]            
Preferred stock, par value     $ 0.0001 $ 0.0001    
Preferred stock, shares authorized     0 10,000,000    
Preferred stock, shares issued       0    
Preferred stock, shares outstanding       0    
Common Stock, Shares Authorized     489,066,238 500,000,000    
Warrants Outstanding       11,500,000    
Number of securities called by warrants or rights       5,750,000    
Subsequent Event [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Exercise price of warrant $ 11.50         $ 11.50
Warrants Outstanding 11,438,290         11,500,000
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable 5,719,145         5,750,000
Proceeds from Warrant Exercises $ 65.8          
IPO [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Exercise price of warrant       $ 11.50    
Warrants Outstanding       11,500,000    
Common stock, sale price       $ 16.50    
Redemption price per warrant       0.01    
Private Placement [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Issuance of common shares, net, shares   10,000,000        
Exercise price of warrant   $ 11.50        
Generating gross proceeds of private placement warrants   $ 5.0        
Preferred Stock [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Preferred stock, par value       $ 0.0001    
Preferred stock, shares authorized       10,010,000    
Common Stock [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Common Stock, Shares Authorized       500,000,000    
Common stock par value       $ 0.0001    
Issuance of common shares, net, shares [1]     1,910,414      
Warrant [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Warrants expiration date       Dec. 31, 2024    
Warrant [Member] | Subsequent Event [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Common stock, sale price         $ 16.50  
Warrant [Member] | IPO [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Number of securities called by warrants or rights   5,750,000   5,750,000    
Minimum [Member] | IPO [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Common stock, sale price   $ 0.50        
Series A Preferred Stock [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Preferred stock, par value     $ 0.0001 $ 0.0001    
Preferred stock, shares authorized     0 10,000    
Preferred stock, shares issued       10,000    
Preferred stock, shares outstanding       10,000    
Percentage of voting power of outstanding shares       25.00%    
Liquidation Amount Per Share       $ 0.01    
Series A Preferred Stock [Member] | Roivant Sciences Ltd. [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Preferred stock, par value       $ 0.0001    
Preferred stock, shares issued       10,000    
Two Series A Preferred Stock [Member] | Minimum [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Percentage of voting power of outstanding shares       25.00%    
Two Series A Preferred Stock [Member] | Maximum [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Percentage of voting power of outstanding shares       40.00%    
Three Series A Preferred Stock [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Percentage of voting power of outstanding shares       40.00%    
Four Series A Preferred Stock Member [Member]            
Subsidiary or Equity Method Investee [Line Items]            
Percentage of voting power of outstanding shares       50.00%    
[1] Retroactively restated for reverse recapitalization as described in Note 1.