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COMMITMENTS AND CONTINGENCIES - (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
Other Commitments [Line Items]      
Asset retirement obligation $ 14,146 $ 13,687 $ 13,038
Canyon Project      
Other Commitments [Line Items]      
Loss contingency, estimate of possible loss 20,330 20,310  
Asset retirement obligation $ 42,910 $ 41,340