Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Inputs (Details)

v3.8.0.1
Fair Value Measurements - Inputs (Details) - $ / shares
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Sep. 28, 2016
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]      
Stock price (in dollars per share) $ 2.01 $ 0.94 $ 0.99
CCE interest rate 1.00%    
Convertible note embedded derivative liability      
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]      
Stock price volatility 70.00%    
Probability of change in control 1.75%    
Stock price (in dollars per share) $ 2.01    
Expected term 2 years 6 months    
Risk-free interest rate 2.30%    
Assumed early conversion/exercise price (in dollars per share) $ 2.73