GENERAL AND BASIS OF PRESENTATION - Business Combination - Enel purchase transaction, details (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jan. 04, 2024	Dec. 31, 2023
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	$ 151,074		$ 151,074			$ 90,544
Electricity
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	146,400	$ 85,800	146,400	$ 85,800
Enel Green Power North America ("EGPNA")
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Trade receivables and others					$ 4,400
Deferred income taxes					3,100
Property, plant and equipment and construction-in-process					197,700
Operating lease right of use					1,200
Other long-term assets					200
Intangible assets					23,600
Goodwill					60,700
Total assets acquired					290,900
Accounts payable, accrued expenses and others					1,500
Other current liabilities					1,800
Operating lease liabilities					1,200
Other long-term liabilities					5,000
Asset retirement obligation					6,800
Total liabilities assumed					16,300
Total assets acquired, and liabilities assumed, net					$ 274,600
Business acquisition, pro forma revenue	213,000	203,200	437,100	398,000
Net income attributable to the Company's stockholders	22,200	22,400	60,800	50,100
Enel Green Power North America ("EGPNA") | Electricity
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Business acquisition, pro forma revenue	$ 166,200	$ 163,700	$ 357,500	$ 343,600