Quarterly report pursuant to Section 13 or 15(d)

Derivative Liabilities - Assumptions used in Estimating Fair Value (Details)

v3.21.1
Derivative Liabilities - Assumptions used in Estimating Fair Value (Details)
Feb. 29, 2020
$ / shares
item
May 31, 2019
$ / shares
item
Jan. 30, 2019
$ / shares
item
Nov. 15, 2018
$ / shares
item
Sep. 15, 2016
$ / shares
item
Warrant Derivative Liability | Fair Value of Underlying Stock          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input | $ / shares 1.05 0.39     0.78
Warrant Derivative Liability | Risk Free Interest Rate          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input 0.0093 0.0194     0.0120
Warrant Derivative Liability | Expected Term (In Years)          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input | item 1.55 2.29     5
Warrant Derivative Liability | Stock Price Volatility          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input 0.87 0.61     1.06
Warrant Derivative Liability | Expected Dividend Yield          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input 0 0     0
Warrant Derivative Liability | Probability of Fundamental Transaction          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input 0.50 0.50     0.50
Warrant Derivative Liability | Probability of Holder Requesting Cash Payment          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Derivative Liability, Measurement Input 0.50 0.50     0.50
Redemption Provision Embedded Derivative | Fair Value of Underlying Stock          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | $ / shares     0.49 0.57  
Redemption Provision Embedded Derivative | Risk Free Interest Rate          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input     0.0252 0.0278  
Redemption Provision Embedded Derivative | Expected Term (In Years)          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | item     2 1.61  
Redemption Provision Embedded Derivative | Stock Price Volatility          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input     0.61 0.588  
Redemption Provision Embedded Derivative | Expected Dividend Yield          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input     0 0  
Redemption Provision Embedded Derivative | Discount Factor          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input     0.85 0.85  
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Fair Value of Underlying Stock          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | $ / shares   0.39      
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Risk Free Interest Rate          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.0195      
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Expected Term (In Years)          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | item   1.67      
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Stock Price Volatility          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.622      
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Expected Dividend Yield          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0      
Long Term Convertible Note Issued January 2019 | Redemption Provision Embedded Derivative | Discount Factor          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.85      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Fair Value of Underlying Stock          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | $ / shares   0.39      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Risk Free Interest Rate          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.0221      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Expected Term (In Years)          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input | item   1.07      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Stock Price Volatility          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.622      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Expected Dividend Yield          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0      
Long Term Convertible Note Issued June 2018 [Member] | Redemption Provision Embedded Derivative | Discount Factor          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Embedded Derivative Liability, Measurement Input   0.85