Segment Reporting - Schedule of Reconciliation of Operating Income from Reportable Segments to Consolidated Loss Before Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended	9 Months Ended
		Sep. 30, 2026	Sep. 30, 2025	Jun. 30, 2026	Sep. 30, 2026	Sep. 30, 2025
Segment Information [Line Items]
All other operating income (expenses)		$ (226)	$ 1,154		$ (1,778)	$ (923)
General and administrative expenses, including allocated expenses		(11,226)	(10,938)		(33,804)	(32,078)
Depreciation and amortization, including allocated expenses		(14,917)	(13,749)		(44,420)	(40,553)
Interest and other financial expenses, net		3,789	7,973		12,989	23,248
Income before income taxes		17,830	13,508		$ 45,262	33,133
Operating Segments
Segment Information [Line Items]
Operating income from reportable segments		66,047	60,647	$ 191,370		172,464
All other operating income (expenses)		484	399	943		2,026
Intercompany charges by the GPMP segment	[1]	(17,002)	(14,892)	(49,729)		(42,577)
Interest and other financial expenses, net		(3,789)	(7,973)	(12,989)		(23,248)
Amounts not allocated to segments [Member]
Segment Information [Line Items]
All other operating income (expenses)		(226)	1,154	(1,778)		(923)
Site operating expenses, including allocated expenses		(292)	(707)	(761)		(2,180)
General and administrative expenses, including allocated expenses		(10,676)	(10,122)	(32,199)		(29,614)
Depreciation and amortization, including allocated expenses		(13,105)	(11,910)	(38,983)		(35,034)
Interest and other financial expenses, net		(3,611)	(3,088)	(10,612)		(7,781)
Income before income taxes		$ 17,830	$ 13,508	$ 45,262		$ 33,133

[1] 1 Represents the fixed margin or fixed fee (through December 31, 2025, 5.0 cents per gallon; 6.0 cents per gallon thereafter) paid to the GPMP segment for the cost of fuel and recorded by the GPMP segment as inter-segment revenues.