Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS??? EQUITY - Warrants Outstanding (Details)

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STOCKHOLDERS’ EQUITY - Warrants Outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Number of shares    
Warrants outstanding, beginning balance (in shares) 3,908,276  
Issued (in shares) 1,666,666  
Exercised (in shares) (11,638)  
Expired (in shares) (410,907)  
Warrants outstanding, ending balance (in shares) 5,152,397 3,908,276
Warrants exercisable (in shares) 5,152,397  
Weighted average exercise price    
Outstanding, beginning balance (in dollars per share) $ 5.42  
Issued (in dollars per share) 1.88  
Exercised (in dollars per share) 2.75  
Expired (in dollars per share) 0  
Outstanding, ending balance (in dollars per share) 4.71 $ 5.42
Weighted average exercise price of warrants, exercisable (in dollars per share) $ 4.71  
Weighted average remaining life (years)    
Outstanding at end of period 3 years 10 months 6 days 3 years 5 months 19 days
Weighted average remaining life, exercisable 3 years 10 months 6 days  
Aggregate intrinsic value (in thousands)    
Outstanding at end of period $ 892 $ 2,020
Aggregate intrinsic value, exercisable $ 892