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LEASES - Maturities of lease liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Undiscounted cash payments:    
2022 (remainder of year) $ 40  
2023 92  
Total lease payments 132  
Less imputed interest (4)  
Total operating lease liabilities 128 $ 235
Centennial, Colorado    
Undiscounted cash payments:    
Total lease payments $ 100