BUSINESS SEGMENTS - Reconciling Information Between Reportable Segments and Consolidated Totals (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting [Abstract]
Segment gross profit (loss)	$ 72,927	$ 78,810
Operating expenses:
Research and development expenses	2,542	1,564
Selling and marketing expenses	4,172	5,126
General and administrative expenses	17,909	19,537
Other operating income	(3,125)	0
Write-off of unsuccessful exploration and storage activities	516	0
Operating income	50,913	52,583
Interest income	1,313	1,839
Interest expense, net	(34,473)	(30,968)
Derivatives and foreign currency transaction gains (losses)	2,060	(1,582)
Income attributable to sale of tax benefits	17,571	17,476
Other non-operating income, net	222	26
Income from operations before income tax and equity in earnings of investees	$ 37,606	$ 39,374