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STOCKHOLDERS' EQUITY - Schedule of Stock Option Activity (Details) - Stock Option Plans
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Number of Shares Subject to Issuance    
Outstanding, beginning balance (in shares) | shares 1,152,714  
Granted (in shares) | shares 519,750  
Forfeited, cancelled, or expired (in shares) | shares (184,582)  
Exercised (in shares) | shares (4,875)  
Outstanding, ending balance (in shares) | shares 1,483,007 1,152,714
Exercisable at end of period (in shares) | shares 479,129  
Weighted- average Exercise Price    
Outstanding, beginning balance (in dollars per share) | $ / shares $ 3.07  
Granted (in dollars per share) | $ / shares 1.92  
Forfeited, cancelled, or expired (in dollars per share) | $ / shares 2.68  
Exercised (in dollars per share) | $ / shares 2.02  
Outstanding, ending balance (in dollars per share) | $ / shares 2.05 $ 3.07
Exercisable at end of period (in dollars per share) | $ / shares $ 3.68  
Weighted- average Remaining Contractual Term    
Outstanding 2 years 1 month 6 days 3 years 2 months 4 days
Exercisable at end of period 3 years 10 days  
Aggregate Intrinsic Value    
Outstanding | $ $ 852 $ 38
Exercisable at end of period | $ $ 453