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CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - Related Party Transactions (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 184,531 | $ 195,636 | $ 365,361 | $ 440,165
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | 76,811 | 97,249 | 154,458 | 237,067
Expenses: |  |  |  |  |
Operating expenses | [1] | 65,358 | 60,737 | 129,292 | 123,482
Selling, general and administrative | [1] | 10,701 | 8,447 | 19,614 | 19,619
Terminalling and storage |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 22,375 | 21,684 | 44,892 | 42,542
Transportation |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 57,676 | 54,750 | 115,983 | 110,473
Product Sales |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 101,003 | 115,845 | 197,532 | 280,435
Specialty products |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 67,288 | 78,872 | 133,613 | 211,141
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | 57,553 | 71,570 | 114,783 | 189,565
Sulfur services |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 33,715 | 36,973 | 63,919 | 69,294
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | 19,234 | 25,654 | 39,633 | 47,471
Terminalling and storage |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | 24 | 25 | 42 | 31
Related Party |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 26,519 | 32,851 | 53,798 | 56,789
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | 11,311 | 10,587 | 20,895 | 22,811
Expenses: |  |  |  |  |
Operating expenses |  | 26,501 | 25,058 | 52,924 | 48,885
Selling, general and administrative |  | 8,638 | 6,556 | 15,501 | 15,072
Related Party | Terminalling and storage |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 18,078 | 18,077 | 36,627 | 35,579
Expenses: |  |  |  |  |
Operating expenses |  | 5,637 | 5,517 | 10,965 | 10,280
Selling, general and administrative |  |  |  | 424 | 228
Related Party | Transportation |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 8,318 | 7,277 | 16,919 | 12,788
Expenses: |  |  |  |  |
Operating expenses |  | 19,814 | 17,951 | 39,587 | 36,015
Selling, general and administrative |  | 2,203 | 1,939 | 4,030 | 4,202
Related Party | Product Sales |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 123 | 7,497 | 252 | 8,422
Related Party | Specialty products |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 89 | 7,417 | 190 | 8,289
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | 8,368 | 7,918 | 14,941 | 17,428
Expenses: |  |  |  |  |
Selling, general and administrative |  | 1,256 | 570 | 1,992 | 1,881
Related Party | Sulfur services |  |  |  |  |
Revenues: |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 34 | 80 | 62 | 133
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | 2,919 | 2,644 | 5,912 | 5,352
Expenses: |  |  |  |  |
Operating expenses |  | 1,050 | 1,590 | 2,372 | 2,590
Selling, general and administrative |  | 1,157 | 439 | 1,933 | 1,520
Related Party | Terminalling and storage |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | $ 24 | $ 25 | $ 42 | $ 31
[1] | Related Party Transactions Included Above
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Revenues:* |  |  |  |  |  |  |
Terminalling and storage | $ | 18,078 |  |  | $ | 18,077 |  |  | $ | 36,627 |  |  | $ | 35,579 |
Transportation | 8,318 |  |  | 7,277 |  |  | 16,919 |  |  | 12,788 |
Product Sales | 123 |  |  | 7,497 |  |  | 252 |  |  | 8,422 |
Costs and expenses:* |  |  |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |  |  |
Specialty products | 8,368 |  |  | 7,918 |  |  | 14,941 |  |  | 17,428 |
Sulfur services | 2,919 |  |  | 2,644 |  |  | 5,912 |  |  | 5,352 |
Terminalling and storage | 24 |  |  | 25 |  |  | 42 |  |  | 31 |
Expenses: |  |  |  |  |  |  |
Operating expenses | 26,501 |  |  | 25,058 |  |  | 52,924 |  |  | 48,885 |
Selling, general and administrative | 8,638 |  |  | 6,556 |  |  | 15,501 |  |  | 15,072 |

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