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LEASES (Tables)
 3 Months Ended
Mar. 31, 2023
LEASES [Abstract]  
Net Operating Lease Expense

For the three months ended March 31, 2023 and 2022, the net operating lease expenses were as follows (in thousands):

   
Three months ended 
  

  2023
     2022
  
Operating lease expense
  
$
68
    
$
186
  
Sublease income
    
(21
)
    
(21
)
Variable lease expense
    
5
      
3
  
Total lease expense
  
$
52
    
$
168
  
Operating Lease Right-of-use Assets and Liabilities

The tables below show the beginning balances of the operating ROU assets and lease liabilities as of January 1, 2023 and the ending balances as of March 31, 2023, including the changes during the period (in thousands).

   
Operating Lease ROU Assets
  
Operating lease ROU assets at January 1, 2023
  
$
1,030
  
Amortization of operating lease ROU assets
    
(41
)
Operating lease ROU assets at March 31, 2023
  
$
989
  

   
Operating Lease Liabilities
  
Operating lease liabilities at January 1, 2023
  
$
1,182
  
Principal payments on operating lease liabilties
    
(173
)
Operating lease liabilities at March 31, 2023
    
1,009
  
Less non-current portion
    
841
  
Current portion at March 31, 2023
  
$
168
  
Maturities of Operating Lease Liabilities The maturities of the operating lease liabilities are as follows (in thousands):

   
As of
March 31, 2023
  
2023
  
$
203
  
2024
    
272
  
2025
    
274
  
2026
    
267
  
2027
    
163
  
Thereafter
    
82
  
Total payments
    
1,261
  
Less imputed interest
    
(252
)
Total operating lease liabilities
  
$
1,009
  

        The weighted-average remaining life, the weighted-average discount rate and the maturities of the operating lease liabilities shown above do not include the Sublease, as the commencement date of the Sublease had not begun as of March 31, 2023, and therefore, the Company did not record a corresponding lease liability and ROU asset.