Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.20.2
Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Sep. 26, 2019
Jul. 17, 2019
Jun. 11, 2019
Related Party Transaction [Line Items]          
Due to related parties $ 3,190 $ 58      
Roivant Sciences Ltd. (RSL) [Member]          
Related Party Transaction [Line Items]          
Partners capital contributions 300        
Due to related parties     $ 2,500 $ 2,900 $ 5,000
Convertible Promissory note converted, principal balance $ 2,500        
Convertible Promissory note converted, shares issued 511,178        
Business combination shares exchanged 250,000        
Service Agreements [Member]          
Related Party Transaction [Line Items]          
Related party transaction, amounts $ 1,400 2,300      
Service Agreements [Member] | Capital Contributions [Member]          
Related Party Transaction [Line Items]          
Related party transaction, amounts   2,200      
Partners capital contributions 1,200        
Service Agreements [Member] | Roivant Sciences Ltd. (RSL) [Member]          
Related Party Transaction [Line Items]          
Related party transaction, amounts   $ 100      
Partners capital contributions $ 200