Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.20.2
Income Taxes - Additional Information (Detail) - USD ($)
 6 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Income Taxes [Line Items]    
Liability unrecognized tax benefits $ 0 $ 0
International Tax Jurisdictions [Member] | Ministry of Finance, India [Member]    
Income Taxes [Line Items]    
Open tax year 2019  
Earliest Tax Year [Member] | Federal Tax Jurisdictions [Member]    
Income Taxes [Line Items]    
Open tax year 2016  
Earliest Tax Year [Member] | State Tax Jurisdictions [Member]    
Income Taxes [Line Items]    
Open tax year 2015  
Earliest Tax Year [Member] | International Tax Jurisdictions [Member] | State Administration of Taxation, China [Member]    
Income Taxes [Line Items]    
Open tax year 2016  
Latest Tax Year [Member] | Federal Tax Jurisdictions [Member]    
Income Taxes [Line Items]    
Open tax year 2019  
Latest Tax Year [Member] | State Tax Jurisdictions [Member]    
Income Taxes [Line Items]    
Open tax year 2019  
Latest Tax Year [Member] | International Tax Jurisdictions [Member] | State Administration of Taxation, China [Member]    
Income Taxes [Line Items]    
Open tax year 2019