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LEASES - Reconciliation of the undiscounted cash flows (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
LEASES    
Undiscounted cash flows of the operating lease $ 1,338  
Unamortized discount 300  
Total operating lease liability 1,038  
Current portion of operating lease liability 91 $ 88
Operating lease liability, net of current portion $ 947 $ 992