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INCOME TAXES - Additional Information (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
Ownership
Dec. 31, 2020
USD ($)
May 16, 2017
USD ($)
Jan. 17, 2017
USD ($)
Operating Loss Carryforwards [Line Items]        
Income tax expense $ 0      
Effective tax rate percent 0.00% 0.00%    
Statutory tax rate 21.00% 21.00%    
Deferred tax assets valuation allowance increased $ 18,348,000 $ 3,729,000    
Ownership change percentage testing period 3 years      
Ownership change, description ownership change occurs when certain shareholders increase their aggregated ownership by more than 50 percentage points over their lowest ownership percentage in a testing period (typically three years).      
Number of consecutive ownership changes | Ownership 2      
Ownership changes date, one Jan. 17, 2017      
Ownership changes date, two May 16, 2017      
Amount of annual limitation of net operating loss and tax credit carryforwards due to ownership change     $ 3,008,000 $ 865,000
Ownership changes analysis expected to be completed year 2022      
Unrecognized tax benefits $ 0 0    
Income tax effects recognized $ 0 0    
Percentage of cash payment in research and development tax credit 65.00%      
Research and development tax credit receivables $ 196,000 467,000    
Research and Development        
Operating Loss Carryforwards [Line Items]        
Exchange program recognized net benefits 103,000 131,000    
Federal And State Net Operating Losses        
Operating Loss Carryforwards [Line Items]        
Income tax expense $ 0 $ 0    
Federal Net Operating Loss        
Operating Loss Carryforwards [Line Items]        
Amount of estimated net operating loss and tax credit carryforwards will expire before utilization due to ownership change       3,125,000
Federal Research and Development        
Operating Loss Carryforwards [Line Items]        
Amount of estimated net operating loss and tax credit carryforwards will expire before utilization due to ownership change       $ 249,000