CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - Related Party Transactions (Parenthetical) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Revenues:
Revenues		$ 192,543	$ 180,830
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		89,576	77,647
Expenses:
Operating expenses	[1]	64,454	63,934
Selling, general and administrative	[1]	11,774	8,913
Terminalling and storage
Revenues:
Revenues	[1]	21,549	22,517
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	0	18
Transportation
Revenues:
Revenues	[1]	52,985	58,307
Product Sales
Revenues:
Revenues	[1]	113,786	96,529
Specialty products
Revenues:
Revenues	[1]	69,305	66,325
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	60,494	57,230
Sulfur services
Revenues:
Revenues	[1]	44,481	30,204
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	29,082	20,399
Related Party
Revenues:
Revenues		26,532	27,279
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		9,131	9,584
Expenses:
Operating expenses		27,565	26,423
Selling, general and administrative		7,892	6,863
Related Party | Terminalling and storage
Revenues:
Revenues		17,262	18,549
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		0	18
Expenses:
Operating expenses		5,677	5,328
Related Party | Transportation
Revenues:
Revenues		7,970	8,601
Expenses:
Operating expenses		20,491	19,773
Related Party | Product Sales
Revenues:
Revenues		1,300	129
Related Party | Specialty products
Revenues:
Revenues		381	101
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		6,010	6,573
Related Party | Sulfur services
Revenues:
Revenues		919	28
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		3,121	2,993
Expenses:
Operating expenses		1,397	1,322
Related Party | Terminalling and storage
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		$ 0	$ 18

[1] Related Party Transactions Included Above Three Months EndedMarch 31,20252024Revenues:*  Terminalling and storage$17,262 $18,549 Transportation7,970 8,601 Product Sales1,300 129 Costs and expenses:*Cost of products sold: (excluding depreciation and amortization)Specialty products6,010 6,573 Sulfur services3,121 2,993 Terminalling and storage— 18 Expenses:Operating expenses27,565 26,423 Selling, general and administrative7,892 6,863