SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - weighted average dilutive common shares (Details) - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	11,407,878	1,492,625
Series B Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		698,600
Series C Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		189,000
Unvested Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,615,000
Market-based equity award
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,000,000
Stock options.
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	590,000	395,000
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,202,878	210,025