Segment Data - Schedule of Segments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Revenues		$ 297,466	$ 249,930
Operating expenses		41,437	39,541
Proportional EBITDA from equity method investments		(18,319)	(16,815)
Other segment items		1,321	(4,225)
Segment EBITDA		104,456	102,405
Corporate expenses and other		9,600	10,254
Proportional interest, taxes, depreciation and amortization from equity-method investments		6,696	6,665
Depreciation and amortization		36,501	27,716
Interest income		32,285	22,547
Interest expense		51,592	41,101
Income tax expense		0	182
Net income		32,352	39,034
Capital spending		49,825	71,943
Affiliated Entity
Segment Reporting Information [Line Items]
Revenues	[1]	166,690	126,321
Cost of materials and other	[1]	108,185	89,966
Operating expenses		28,678	21,940
Nonrelated Party
Segment Reporting Information [Line Items]
Revenues		130,776	123,609
Cost of materials and other		60,426	39,086
Operating Segments Excluding Intersegment Elimination
Segment Reporting Information [Line Items]
Cost of materials and other		168,571	129,024
Segment Reporting, Reconciling Item, Corporate Nonsegment
Segment Reporting Information [Line Items]
Depreciation and amortization		767	760
Interest income		0	0
Capital spending		0	0
Gathering and Processing
Segment Reporting Information [Line Items]
Revenues		154,676	118,603
Gathering and Processing | Operating Segments
Segment Reporting Information [Line Items]
Revenues		154,676	118,603
Cost of materials and other		50,301	24,344
Operating expenses		32,439	30,581
Proportional EBITDA from equity method investments		0	0
Other segment items		1,316	(4,261)
Segment EBITDA		70,620	67,939
Depreciation and amortization		33,241	24,723
Interest income		10,158	11,365
Capital spending		49,519	71,311
Gathering and Processing | Operating Segments | Affiliated Entity
Segment Reporting Information [Line Items]
Revenues		49,246	38,567
Gathering and Processing | Operating Segments | Nonrelated Party
Segment Reporting Information [Line Items]
Revenues		105,430	80,036
Wholesale Marketing and Terminalling
Segment Reporting Information [Line Items]
Revenues		117,796	106,699
Wholesale Marketing and Terminalling | Operating Segments
Segment Reporting Information [Line Items]
Revenues		117,796	106,699
Cost of materials and other		105,132	89,653
Operating expenses		2,872	3,799
Proportional EBITDA from equity method investments		0	0
Other segment items		30	10
Segment EBITDA		9,762	13,237
Depreciation and amortization		768	952
Interest income		4,017	4,161
Capital spending		111	90
Wholesale Marketing and Terminalling | Operating Segments | Affiliated Entity
Segment Reporting Information [Line Items]
Revenues		93,926	64,708
Wholesale Marketing and Terminalling | Operating Segments | Nonrelated Party
Segment Reporting Information [Line Items]
Revenues		23,870	41,991
Storage and Transportation
Segment Reporting Information [Line Items]
Revenues		24,994	24,628
Storage and Transportation | Operating Segments
Segment Reporting Information [Line Items]
Revenues		24,994	24,628
Cost of materials and other		13,138	15,027
Operating expenses		6,126	5,161
Proportional EBITDA from equity method investments		0	0
Other segment items		(25)	26
Segment EBITDA		5,755	4,414
Depreciation and amortization		1,725	1,281
Interest income		18,110	7,021
Capital spending		195	542
Storage and Transportation | Operating Segments | Affiliated Entity
Segment Reporting Information [Line Items]
Revenues		23,518	23,046
Storage and Transportation | Operating Segments | Nonrelated Party
Segment Reporting Information [Line Items]
Revenues		1,476	1,582
Investments in Pipeline Joint Ventures | Operating Segments
Segment Reporting Information [Line Items]
Revenues		0	0
Cost of materials and other		0	0
Operating expenses		0	0
Proportional EBITDA from equity method investments		(18,319)	(16,815)
Other segment items		0	0
Segment EBITDA		18,319	16,815
Depreciation and amortization		0	0
Interest income		0	0
Capital spending		0	0
Investments in Pipeline Joint Ventures | Operating Segments | Affiliated Entity
Segment Reporting Information [Line Items]
Revenues		0	0
Investments in Pipeline Joint Ventures | Operating Segments | Nonrelated Party
Segment Reporting Information [Line Items]
Revenues		$ 0	$ 0

[1] See Note 3 for a description of our material affiliate revenue and purchases transactions.