Quarterly report pursuant to Section 13 or 15(d)

Description of Stock Plans - Schedule of Market-based Assumptions (Details)

v3.19.3
Description of Stock Plans - Schedule of Market-based Assumptions (Details)
 6 Months Ended
Sep. 30, 2019
Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Expected life of the options 5 years 4 months 6 days
Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Expected life of the options 9 years 7 months 21 days
Risk-free interest rate | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.0167
Risk-free interest rate | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.0225
Expected volatility | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.65
Expected volatility | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.66
Expected dividend yield  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0
Expected forfeitures | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.27
Expected forfeitures | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 0.29