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RELATED PARTY TRANSACTIONS - Leases (Narrative) (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Jul. 31, 2023
Feb. 28, 2022
Related Party Transaction [Line Items]        
Right-of-use assets $ 220,616 $ 221,508    
Operating lease, liability 274,809 272,553    
KAEC Lease Agreement | Related Party        
Related Party Transaction [Line Items]        
Lease initial term (in years)       25 years
Right-of-use assets 4,300 4,500    
Operating lease, liability 6,000 5,700    
KAFD Lease Agreement | Related Party        
Related Party Transaction [Line Items]        
Lease initial term (in years)     6 years  
Right-of-use assets 2,100 2,300    
Operating lease, liability $ 2,300 $ 2,300