Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Inputs (Details)

v3.20.1
Fair Value Measurements - Inputs (Details) - $ / shares
 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price (in dollars per share) $ 4.18 $ 3.50 $ 2.01
CCE interest rate 0.17% 0.17%  
Convertible note embedded derivative liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price (in dollars per share)   $ 4.18  
Expected term   6 months  
Warrant liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price (in dollars per share) $ 4.18    
Expected term 6 months    
Stock price volatility | Convertible note embedded derivative liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Measurement input (percent)   60.00%  
Stock price volatility | Warrant liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Measurement input (percent) 60.00%    
Risk-free interest rate | Convertible note embedded derivative liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Measurement input (percent)   0.17%  
Risk-free interest rate | Warrant liability      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Measurement input (percent) 0.17%