Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Loss Per Common Share (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Loss Per Common Share (Details) - shares
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share (in shares) 5,798,994 3,710,447 5,798,994 3,710,447
Penny Options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Exercisable penny options (in shares) 170,149   170,149  
Stock options (excluding exercisable penny stock options)        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share (in shares) 1,868,218 569,875 1,868,218 569,875
Restricted stock awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share (in shares) 22,500 0 22,500 0
Convertible debt        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share (in shares) 0 2,718,023 0 2,718,023
Warrants        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share (in shares) 3,908,276 422,549 3,908,276 422,549