PREFERRED STOCK AND DETACHABLE WARRANTS - Narrative (Details)		3 Months Ended		9 Months Ended
	Jun. 24, 2020	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Jun. 25, 2021 shares	Jun. 24, 2021 shares	Dec. 31, 2020 USD ($) $ / shares shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)		50,000,000		50,000,000				50,000,000
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Liabilities at fair value | $		$ 1,072,620		$ 1,072,620				$ 330,412
Liability | Expected Dividend Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		0		0
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)		5,000,000		5,000,000				5,000,000
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001				$ 0.001
Preferred stock, shares issued (in shares)		385,601		385,601				419,859
Preferred stock, shares outstanding (in shares)		385,601		385,601				419,859
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)		0		0		1,783,292		4,102,690
Temporary equity, shares authorized (in shares)		10,000,000		10,000,000				10,000,000
Temporary equity, shares issued (in shares)		4,102,690		4,102,690				4,102,690
Dividends payable | $		$ 0		$ 0				$ 317,970
Dividends paid in kind | $		$ 0	$ 188,837	$ 475,748	$ 547,349
Preferred stock, dividend percentage (as a percent)	10.00%
Series B Preferred Stock | Liability | Risk Free Interest Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		0.0450		0.0450
Series B Preferred Stock | Liability | Minimum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		0.66		0.66
Series B Preferred Stock | Liability | Maximum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		2.02		2.02
Series B1 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)		0		0			3,134,889	7,399,649
Temporary equity, shares authorized (in shares)		17,000,000		17,000,000				17,000,000
Temporary equity, shares issued (in shares)		7,399,649		7,399,649				7,399,649
Dividends payable | $		$ 0		$ 0				$ 288,594
Dividends paid in kind | $		$ 0	$ 171,380	$ 502,986	$ 546,557
Preferred stock, dividend percentage (as a percent)	10.00%
Series B1 Preferred Stock | Liability
Class of Stock [Line Items]
Expected term (years)		3 months		3 months
Series B1 Preferred Stock | Liability | Minimum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		0.66		0.66
Series B1 Preferred Stock | Liability | Maximum | Expected Volatility Rate
Class of Stock [Line Items]
Warrant measurement input (as a percent)		2.02		2.02