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
		Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Information [Line Items]
All other operating income (expenses)		$ (489)	$ (882)	$ (1,552)	$ (2,077)
General and administrative expenses, including allocated expenses		(11,764)	(10,392)	(22,578)	(21,140)
Depreciation and amortization, including allocated expenses		(14,716)	(13,301)	(29,503)	(26,804)
Interest and other financial expenses, net		3,679	7,797	9,200	15,275
Income before income taxes		16,347	13,418	27,432	19,625
Operating Segments
Segment Information [Line Items]
Operating income from reportable segments		64,740	60,269	125,323	111,817
All other operating income (expenses)		315	647	459	1,627
Intercompany charges by the GPMP segment	[1]	(16,639)	(14,481)	(32,727)	(27,685)
Interest and other financial expenses, net		(3,679)	(7,797)	(9,200)	(15,275)
Amounts not allocated to segments [Member]
Segment Information [Line Items]
All other operating income (expenses)		(489)	(882)	(1,552)	(2,077)
Site operating expenses, including allocated expenses		(284)	(746)	(469)	(1,473)
General and administrative expenses, including allocated expenses		(11,219)	(9,572)	(21,523)	(19,492)
Depreciation and amortization, including allocated expenses		(12,903)	(11,461)	(25,878)	(23,124)
Interest and other financial expenses, net		(3,495)	(2,559)	(7,001)	(4,693)
Income before income taxes		$ 16,347	$ 13,418	$ 27,432	$ 19,625

[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.