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LEASES - Reconciliation of the undiscounted cash flows (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
LEASES    
Undiscounted cash flows of the operating lease $ 1,819  
Unamortized discount 840  
Total operating lease liability 979  
Current portion of operating lease liability 43 $ 42
Operating lease liability, net of current portion $ 936 $ 947