CONTRACT ASSETS AND CONTRACT LIABILITIES (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract liabilities recognized	$ 600
Accounts receivable
Accounts receivable—Utility Members	93,883	$ 101,394
Other accounts receivable - trade:	27,446	23,123
Contract liabilities
Contract liabilities (unearned revenue)	3,589	4,159
Other accounts receivable - trade
Accounts receivable
Other accounts receivable - trade:	27,327	20,734
Other accounts receivable - trade | Non-member electric sales
Accounts receivable
Other accounts receivable - trade:	16,048	9,657
Other accounts receivable - trade | Other
Accounts receivable
Other accounts receivable - trade:	11,279	11,077
Other accounts receivable - nontrade
Accounts receivable
Other accounts receivable - trade:	$ 119	$ 2,389