STOCK ISSUED UNDER MASTER FINANCING AGREEMENTS AND WARRANTS - Schedule of Valuation Assumptions (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	May 14, 2021 USD ($) shares	Apr. 01, 2021 USD ($) shares	Dec. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 878,970		$ 878,970					$ 0
Changes in fair value of warrant liabilities	$ (92,979)	$ 0	$ 98,498	$ 0
Convertible Series A preferred shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (in years)	4 years 9 months 29 days		4 years 9 months 29 days		4 years 9 months 29 days		4 years 9 months 29 days
Change in expected life (in years)	0 days		0 days
Fair value	$ 745,023		$ 745,023		$ 825,350		$ 631,897
Changes in fair value of warrant liabilities	$ (80,327)		$ 113,126
Convertible Series A preferred shares | Expected volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	1.176		1.176		1.002		1.002
Changes in Fair Value Inputs	17.40%		17.40%
Convertible Series A preferred shares | Risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.010		0.010		0.009		0.009
Changes in Fair Value Inputs	0.10%		0.10%
Convertible Series A preferred shares | Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.0000		0.0000		0.0000		0.0000
Changes in Fair Value Inputs	0.00%		0.00%
Convertible Series B preferred shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (in years)	4 years 9 months 18 days		4 years 9 months 18 days		4 years 9 months 18 days	4 years 9 months 18 days
Change in expected life (in years)	0 days		0 days
Fair value	$ 133,947		$ 133,947		$ 146,599	$ 148,575
Changes in fair value of warrant liabilities	$ (12,652)		$ (14,628)
Convertible Series B preferred shares | Expected volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	1.176		1.176		1.002	1.002
Changes in Fair Value Inputs	17.40%		17.40%
Convertible Series B preferred shares | Risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.010		0.010		0.009	0.008
Changes in Fair Value Inputs	0.10%		0.20%
Convertible Series B preferred shares | Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.0000		0.0000		0.0000	0.0000
Changes in Fair Value Inputs	0.00%		0.00%
B. Riley Securities, Inc. | Private Placement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (in years)						5 years
B. Riley Securities, Inc. | Convertible Series A preferred shares | Private Placement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants issued during period (in shares) | shares							97,920
Expected life (in years)							5 years
B. Riley Securities, Inc. | Convertible Series B preferred shares | Private Placement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants issued during period (in shares) | shares						18,170
Expected life (in years)						5 years