BASIS OF PRESENTATION AND SUMMARY OF ACCOUNTING POLICIES - Additional information (Details)					3 Months Ended		12 Months Ended
	Jan. 13, 2021 USD ($) $ / shares shares	Dec. 10, 2020 USD ($)	Oct. 07, 2020 USD ($)	May 01, 2020 USD ($)	Dec. 31, 2020 USD ($) customer $ / shares shares	Dec. 31, 2019 USD ($) customer	Sep. 30, 2020 USD ($) customer $ / shares	Jan. 31, 2021 USD ($)
Concentration Risk [Line Items]
Retained Earnings (Accumulated Deficit)					$ (274,645,206)		$ (269,835,650)
Net loss					(4,807,062)	$ (2,662,741)
Negative operating cash flow					4,155,742	2,731,273
Cash and cash equivalents					4,241,407		$ 7,786,743
Working Capital Surplus Deficit					$ 3,621,859
Common Stock, Par Or Stated Value Per Share | $ / shares					$ 0.001		$ 0.001
Research and development					$ 748,365	564,426
Allowance on accounts receivable (in dollars)					$ 11,968		$ 11,968
Depreciation method					straight line method
Net proceeds from exercise of warrants		$ 1,100,000			$ 2,605,529	$ 0
Excess of FDIC insurance limit					$ 4,000,000
PPP Loan
Concentration Risk [Line Items]
Proceeds from Issuance of Debt				$ 847,000
Public Offering
Concentration Risk [Line Items]
Number of warrants exercised | shares					518,551
Net proceeds from exercise of warrants			$ 1,669,500		$ 2,600,000
Subsequent event
Concentration Risk [Line Items]
Cash balance								$ 16,500,000
Subsequent event | Public Offering
Concentration Risk [Line Items]
Number of common stock issued | shares	1,810,000
Public offering price for each share together with warrant | $ / shares	$ 8.30
Gross proceeds of offering before underwriter discounts, commissions and other offering expenses	$ 15,000,000
Net proceeds of offering after underwriter discounts, commissions and other offering expenses	$ 14,000,000
Computer equipment
Concentration Risk [Line Items]
Estimated useful life for computer equipment, lab equipment and furniture					P3Y
Construction in progress					$ 1,267,802		$ 214,101
Lab equipment
Concentration Risk [Line Items]
Estimated useful life for computer equipment, lab equipment and furniture					P3Y
Furniture
Concentration Risk [Line Items]
Estimated useful life for computer equipment, lab equipment and furniture					P3Y
Total Revenue
Concentration Risk [Line Items]
Number of customers | customer					2	3
Total Revenue | One customer
Concentration Risk [Line Items]
Concentration risk percentage					26.00%	27.00%
Total Revenue | Two customer
Concentration Risk [Line Items]
Concentration risk percentage					10.00%	22.00%
Total Revenue | Three customers
Concentration Risk [Line Items]
Concentration risk percentage						10.00%
Accounts Receivable | Three customers
Concentration Risk [Line Items]
Concentration risk percentage					61.00%
Number of customers | customer					3
Accounts Receivable | Four customer
Concentration Risk [Line Items]
Concentration risk percentage							74.00%
Number of customers | customer							4