DERIVATIVE FINANCIAL INSTRUMENTS - Financial Statement Presentation - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Financial Instruments.
Derivative (gain) loss	$ (1,491)	$ 38,749	$ (41,560)	$ 109,892
Derivative cash payments, net			$ (6,123)	(1,022)
Derivative cash premium payments				(46,111)
Cash receipts related to natural gas call contracts through restructuring of strike prices				$ 105,300