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v3.25.1

Related Party Transactions - Impact of Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Revenues: |  |  |
Revenues |  | $ 192,543 | $ 180,830
Cost of products sold: |  |  |
Cost of products sold |  | 89,576 | 77,647
Operating expenses: |  |  |
Operating expenses | [1] | 64,454 | 63,934
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: |  |  |
Cost of products sold | [1] | 60,494 | 57,230
Sulfur services |  |  |
Revenues: |  |  |
Revenues | [1] | 44,481 | 30,204
Cost of products sold: |  |  |
Cost of products sold | [1] | 29,082 | 20,399
Terminalling and storage |  |  |
Revenues: |  |  |
Revenues | [1] | 21,549 | 22,517
Cost of products sold: |  |  |
Cost of products sold | [1] | 0 | 18
Related Party |  |  |
Revenues: |  |  |
Revenues |  | 26,532 | 27,279
Cost of products sold: |  |  |
Cost of products sold |  | 9,131 | 9,584
Operating expenses: |  |  |
Operating expenses |  | 27,565 | 26,423
Selling, general and administrative: |  |  |
Selling, general and administrative |  | 7,892 | 6,863
Related Party | Indirect, including overhead allocation |  |  |
Selling, general and administrative: |  |  |
Selling, general and administrative |  | 3,496 | 3,582
Related Party | Transportation |  |  |
Revenues: |  |  |
Revenues |  | 7,970 | 8,601
Operating expenses: |  |  |
Operating expenses |  | 20,491 | 19,773
Selling, general and administrative: |  |  |
Selling, general and administrative |  | 2,096 | 1,827
Related Party | Product sales |  |  |
Revenues: |  |  |
Revenues |  | 1,300 | 129
Related Party | Specialty products |  |  |
Revenues: |  |  |
Revenues |  | 381 | 101
Cost of products sold: |  |  |
Cost of products sold |  | 6,010 | 6,573
Selling, general and administrative: |  |  |
Selling, general and administrative |  | 1,037 | 736
Related Party | Sulfur services |  |  |
Revenues: |  |  |
Revenues |  | 919 | 28
Cost of products sold: |  |  |
Cost of products sold |  | 3,121 | 2,993
Operating expenses: |  |  |
Operating expenses |  | 1,397 | 1,322
Selling, general and administrative: |  |  |
Selling, general and administrative |  | 960 | 776
Related Party | Terminalling and storage |  |  |
Revenues: |  |  |
Revenues |  | 17,262 | 18,549
Cost of products sold: |  |  |
Cost of products sold |  | 0 | 18
Operating expenses: |  |  |
Operating expenses |  | 5,677 | 5,328
Selling, general and administrative: |  |  |
Selling, general and administrative |  | $ 303 | $ (58)
[1] | Related Party Transactions Included Above
|  |  | Three Months Ended
|  |  | March 31,
|  |  |  |  | 2025 |  | 2024
Revenues:* |  |  |  |  |  |  |
Terminalling and storage |  |  |  |  | $ | 17,262 |  |  | $ | 18,549 |
Transportation |  |  |  |  | 7,970 |  |  | 8,601 |
Product Sales |  |  |  |  | 1,300 |  |  | 129 |
Costs and expenses:* |  |  |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |  |  |
Specialty products |  |  |  |  | 6,010 |  |  | 6,573 |
Sulfur services |  |  |  |  | 3,121 |  |  | 2,993 |
Terminalling and storage |  |  |  |  | — |  |  | 18 |
Expenses: |  |  |  |  |  |  |
Operating expenses |  |  |  |  | 27,565 |  |  | 26,423 |
Selling, general and administrative |  |  |  |  | 7,892 |  |  | 6,863 |

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