Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details)

v3.10.0.1
Fair Value of Financial Instruments (Details) - Significant Other Observable Inputs (Level 2) [Member]
Nov. 30, 2018
Feb. 28, 2018
Warrant [Member] | November 2018 Canopy Warrants [Member] | Expected life (in years) [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, term 2 years 11 months  
Warrant [Member] | November 2018 Canopy Warrants [Member] | Expected volatility [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.752  
Warrant [Member] | November 2018 Canopy Warrants [Member] | Risk-free interest rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.022  
Warrant [Member] | November 2018 Canopy Warrants [Member] | Expected dividend yield [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.000  
Warrant [Member] | November 2017 Canopy Warrants [Member] | Expected life (in years) [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, term 1 year 5 months 2 years 2 months
Warrant [Member] | November 2017 Canopy Warrants [Member] | Expected volatility [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.832 0.709
Warrant [Member] | November 2017 Canopy Warrants [Member] | Risk-free interest rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.021 0.018
Warrant [Member] | November 2017 Canopy Warrants [Member] | Expected dividend yield [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrant and rights outstanding, measurement input 0.000 0.000
Convertible debt securities [Member] | Expected life (in years) [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities, term 4 years 7 months  
Convertible debt securities [Member] | Expected volatility [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Instrument, measurement input 0.442  
Convertible debt securities [Member] | Risk-free interest rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Instrument, measurement input 0.022  
Convertible debt securities [Member] | Expected dividend yield [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Instrument, measurement input 0.000