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GENERAL AND BASIS OF PRESENTATION - Transferable production and investment tax credits (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Income related to transferable production tax credits   $ 7,100 $ 2,400 $ 15,100 $ 6,900
Income related to transferable investment tax credits   $ 9,600 $ 6,600 27,300 17,200
Increase (decrease) in receivables       $ (42,527) $ 48,805
Production Tax Credits          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Increase (decrease) in receivables $ (14,200)