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v3.21.2

Fair Value Measurements (Details Narrative) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / shares | Dec. 31, 2019 USD ($) $ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Change in valuation of warrant derivative liabilities | $ 360,093 | $ 243,276 | $ (304,943) | $ 382,495 | $ 496,305 | $ (1,015,151)
Change in valuation of embedded derivative liabilities |  | 2,922,000 |  | 4,543,000 | 2,571,004 | (5,040,000)
Cash and cash equivalents | 6,722,864 |  | 6,722,864 |  | 9,033,872 | 8,852,281
Change in valuation of embedded derivative liabilities |  | $ (2,922,000) |  | $ (4,543,000) | (2,571,004) | 5,040,000
Warrant derivative liabilities | $ 1,452,838 |  | $ 1,452,838 |  | 1,147,895 | 1,644,200
Fair value of embedded derivative liabilities |  |  |  |  |  | 13,501,000
12% Convertible Debentures [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value of embedded derivative liabilities |  |  |  |  | $ 10,929,996 |
Series G Preferred Stock [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Warrant derivative liabilities |  |  |  |  |  | 72,563
Other income |  |  |  |  |  | 72,563
Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Adjustment to additional paid in capital |  |  |  |  |  | $ 735,186
Measurement Input, Expected Term [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, term |  |  |  |  |  | 3 years 9 months
Measurement Input, Expected Term [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, term | 1 year 11 months 15 days |  | 1 year 11 months 15 days |  | 2 years 5 months 12 days | 3 years 5 months 12 days
Measurement Input, Expected Term [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, term | 4 years 3 months 18 days |  | 4 years 3 months 18 days |  | 4 years 9 months 14 days | 5 years 9 months 18 days
Measurement Input, Risk Free Interest Rate [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages |  |  |  |  |  | 1.56
Measurement Input, Risk Free Interest Rate [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0.25 |  | 0.25 |  | 0.13 | 1.62
Measurement Input, Risk Free Interest Rate [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0.67 |  | 0.67 |  | 0.36 | 1.76
Measurement Input, Price Volatility [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages |  |  |  |  |  | 130.46
Measurement Input, Price Volatility [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 147.10 |  | 147.10 |  | 150.55 | 144.56
Measurement Input, Price Volatility [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 134.44 |  | 134.44 |  | 140.95 | 127.63
Measurement Input, Expected Dividend Rate [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages |  |  |  |  |  | 0.0
Measurement Input, Expected Dividend Rate [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0 |  | 0 |  | 0 | 0.0
Measurement Input, Expected Dividend Rate [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0 |  | 0 |  | 0 | 0.0
Transaction Date Closing Market [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  |  | $ 0.89
Transaction Date Closing Market [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0.78 |  | 0.78 |  | 0.60 |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  | $ 0.60 | 0.80
Transaction Date Closing Market [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0.78 |  | 0.78 |  | 0.60 |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  | $ 0.60 | 0.80
Measurement Input, Exercise Price [Member] | Level Two Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  |  | 0.50
Measurement Input, Exercise Price [Member] | Strome Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 0.50 |  | 0.50 |  | 0.50 |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  | $ 0.50 | 4.50
Measurement Input, Exercise Price [Member] | B. Riley Warrants [Member] |  |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |  |
Fair value assumptions, measurement input, percentages | 1.00 |  | 1.00 |  | 1.00 |
Fair value assumptions, measurement input, price per share | $ / shares |  |  |  |  | $ 1.00 | $ 1.00

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