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CONSOLIDATED STATEMENTS OF OPERATIONS - (Related Party Transactions) (Parenthetical) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Revenues:

Revenues

$ 707,622

$ 797,963

$ 1,018,878

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

297,036

389,680

623,306

Expenses:

Operating expenses

^[1]

255,586

252,211

251,886

Selling, general and administrative

^[1]

48,502

40,826

41,812

Terminalling and storage

Revenues:

Revenues

^[1]

89,067

86,514

80,193

Transportation

Revenues:

Revenues

^[1]

223,934

223,677

219,008

Sulfur services

Revenues:

Revenues

^[1]

115,199

127,565

166,827

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

^[1]

68,364

83,702

120,062

Product sales

Revenues:

Revenues

^[1]

380,049

474,342

707,340

Specialty products

Revenues:

Revenues

^[1]

264,850

346,777

540,513

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

^[1]

228,600

305,903

503,225

Terminalling and storage

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

^[1]

72

75

19

Related Party

Revenues:

Revenues

106,170

110,181

95,814

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

43,776

47,187

50,092

Expenses:

Operating expenses

106,831

100,851

93,630

Selling, general and administrative

39,385

32,021

31,758

Related Party | Terminalling and storage

Revenues:

Revenues

71,799

72,138

66,867

Related Party | Transportation

Revenues:

Revenues

33,250

29,276

28,393

Expenses:

Operating expenses

79,441

73,866

66,682

Selling, general and administrative

11,218

8,927

7,553

Related Party | Sulfur services

Revenues:

Revenues

105

220

404

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

11,915

11,182

10,717

Expenses:

Operating expenses

4,888

5,738

6,165

Selling, general and administrative

5,427

3,714

3,917

Related Party | Product sales

Revenues:

Revenues

457

8,767

554

Related Party | Specialty products

Revenues:

Revenues

352

8,547

150

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

31,789

35,930

39,356

Expenses:

Selling, general and administrative

5,454

4,152

5,565

Related Party | Terminalling and storage

Cost of products sold: (excluding depreciation and amortization)

Cost of products sold

72

75

19

Expenses:

Operating expenses

22,502

21,247

20,783

Selling, general and administrative

3,051

780

804

Related Party | Sulfur Services

Revenues:

Revenues

$ 664

$ 0

$ 0

[1]

Related Party Transactions Included Above

			Year Ended December 31,
			2024						2023						2022
Revenues:
Terminalling and storage			$	71,799					$	72,138					$	66,867
Transportation			33,250						29,276						28,393
Sulfur Services			664						—						—
Product sales			457						8,767						554
Costs and expenses:
Cost of products sold: (excluding depreciation and amortization)
Specialty products			31,789						35,930						39,356
Sulfur services			11,915						11,182						10,717
Terminalling and storage			72						75						19
Expenses:
Operating expenses			106,831						100,851						93,630
Selling, general and administrative			39,385						32,021						31,758

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