Quarterly report pursuant to Section 13 or 15(d)

Description of Stock Plans - Calculating Fair Value Options Granted Using the Black-Scholes Option- Pricing Model (Details)

v3.8.0.1
Description of Stock Plans - Calculating Fair Value Options Granted Using the Black-Scholes Option- Pricing Model (Details)
6 Months Ended
Sep. 30, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Expected volatility 73.00%
Expected dividend yield 0.00%
Expected forfeitures 20.00%
Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 1.80%
Expected life of the options 5 years 8 months 8 days
Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Risk-free interest rate 2.30%
Expected life of the options 9 years 11 months 5 days