General form of registration statement for all companies including face-amount certificate companies

Warrant derivative liability, Fair value measurements and valuation techniques (FY) (Details)

v3.20.2
Warrant derivative liability, Fair value measurements and valuation techniques (FY) (Details) - Warrant [Member]
Sep. 30, 2020
Dec. 31, 2019
May 06, 2019
Stock Price [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability 0.49 2.70 6.00
Exercise Price [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability 0.65 1.62 3.90
Expected Remaining Term (in Years) [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability 0.22    
Expected Remaining Term (in Years) [Member] | Minimum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability   0.95 1.60
Expected Remaining Term (in Years) [Member] | Maximum [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability   1.02 1.68
Volatility [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability 0.75 0.69 0.64
Risk-free Interest Rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Abstract]      
Derivative liability 0.0009 0.0160 0.0239