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LIQUIDITY AND CAPITAL RESOURCES (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
Jul. 13, 2023
USD ($)
shares
Apr. 05, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 31, 2022
USD ($)
ft²
Liquidity and Capital Resources [Abstract]                
Cash $ 1,837   $ 1,837       $ 11,446  
Accumulated deficit (175,229)   (175,229)       $ (165,297)  
Net loss $ (4,508) $ (3,398) (9,924) $ (12,773)        
Net cash used in operating activities     $ (9,921) $ (9,425)        
New Facility Lease [Abstract]                
Area of premises | ft²               45,500
Letter of credit               $ 4,100
Restricted cash               $ 4,100
Lincoln Park [Member]                
New Facility Lease [Abstract]                
Common stock shares issued and sold (in shares) | shares 214,000   214,000          
Gross proceeds from sale of equity $ 300   $ 300          
Lincoln Park [Member] | Maximum [Member]                
New Facility Lease [Abstract]                
Aggregate gross purchase price           $ 10,000    
Subsequent Event [Member] | Purchase Agreements [Member]                
Private Placement Offerings [Abstract]                
Aggregate principal convertible promissory notes         $ 8,700      
Warrants to purchase common shares (in shares) | shares         6,100,000      
Annual interest rate on convertible notes payable         6.00%