Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Market-based Assumptions (Details)

v3.19.3.a.u2
Fair Value Measurements - Schedule of Market-based Assumptions (Details)
9 Months Ended
Dec. 31, 2019
$ / shares
Sep. 30, 2019
$ / shares
Mar. 31, 2019
$ / shares
Dec. 31, 2018
$ / shares
Sep. 30, 2018
$ / shares
Mar. 31, 2018
$ / shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Stock price (in dollars per share) $ 7.13 $ 6.45 $ 3.78 $ 1.83 $ 1.24 $ 2.01
CCE interest rate 1.59%          
Warrant liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Stock price (in dollars per share) $ 7.13          
Stock price volatility | Warrant liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Embedded derivative liability, measurement input 0.60          
Expected term | Warrant liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Expected term 8 months 22 days          
Risk-free interest rate | Warrant liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Embedded derivative liability, measurement input 0.0159