Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Inputs (Details)

v3.10.0.1
Fair Value Measurements - Inputs (Details)
 6 Months Ended
Sep. 30, 2018
$ / shares
Jun. 30, 2018
$ / shares
Mar. 31, 2018
$ / shares
Sep. 30, 2017
$ / shares
Jun. 30, 2017
$ / shares
Mar. 31, 2017
$ / shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Stock price (in dollars per share) $ 1.24 $ 1.51 $ 2.01 $ 1.51 $ 1.03 $ 0.94
CCE interest rate 1.00%          
Convertible note embedded derivative liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Probability of change in control 1.75%          
Stock price (in dollars per share) $ 1.24          
Expected term 2 years          
Assumed early conversion/exercise price (in dollars per share) $ 2.73          
Warrant liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Probability of change in control 1.75%          
Stock price (in dollars per share) $ 1.24          
Expected term 2 years          
Assumed early conversion/exercise price (in dollars per share) $ 2.73          
Stock price volatility | Convertible note embedded derivative liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Embedded derivative liability, measurement input 0.60          
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          
Risk-free interest rate | Convertible note embedded derivative liability            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]            
Embedded derivative liability, measurement input 0.0277          
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 0.0277