RELATED PARTY TRANSACTIONS - Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jul. 31, 2023	Feb. 28, 2022
Related Party Transaction [Line Items]
Right-of-use assets	$ 235,821	$ 211,886
Operating lease, liability	284,437	265,431
KAEC Lease Agreement | Related Party
Related Party Transaction [Line Items]
Lease initial term				25 years
Right-of-use assets	4,100	4,200
Operating lease, liability	6,300	6,100
KAFD Lease Agreement | Related Party
Related Party Transaction [Line Items]
Lease initial term			6 years
Right-of-use assets	1,800	2,000
Operating lease, liability	$ 2,500	$ 2,400