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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following table disaggregates our revenue by major source:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Terminalling and storage segment |  |  |  |  |  |  |
Throughput and storage | $ | 23,930 |  |  | $ | 22,562 |  |  | $ | 67,883 |  |  | $ | 67,454 |
| $ | 23,930 |  |  | $ | 22,562 |  |  | $ | 67,883 |  |  | $ | 67,454 |
Transportation segment |  |  |  |  |  |  |
Land transportation | $ | 37,812 |  |  | $ | 40,514 |  |  | $ | 115,433 |  |  | $ | 126,117 |
Inland marine transportation | 9,574 |  |  | 14,146 |  |  | 34,254 |  |  | 41,446 |
Offshore marine transportation | 2,323 |  |  | 1,846 |  |  | 6,833 |  |  | 4,926 |
| $ | 49,709 |  |  | $ | 56,506 |  |  | $ | 156,520 |  |  | $ | 172,489 |
Sulfur services segment |  |  |  |  |  |  |
Sulfur product sales | $ | 9,022 |  |  | $ | 8,585 |  |  | $ | 27,628 |  |  | $ | 21,789 |
Fertilizer product sales | 19,540 |  |  | 12,598 |  |  | 85,470 |  |  | 63,313 |
Sulfur services | 4,073 |  |  | 3,477 |  |  | 12,369 |  |  | 10,431 |
| $ | 32,635 |  |  | $ | 24,660 |  |  | $ | 125,467 |  |  | $ | 95,533 |
Specialty products segment |  |  |  |  |  |  |
Natural gas liquids product sales | $ | 33,927 |  |  | $ | 35,940 |  |  | $ | 109,023 |  |  | $ | 109,506 |
Lubricant product sales | 28,516 |  |  | 31,266 |  |  | 83,043 |  |  | 91,313 |
| $ | 62,443 |  |  | $ | 67,206 |  |  | $ | 192,066 |  |  | $ | 200,819 |
Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction | The table below includes estimated minimum revenue expected to be recognized in the future related to performance obligations that are unsatisfied at the end of the reporting period. The Partnership applies the practical expedient in ASC 606-10-50-14(a) and does not disclose information about remaining performance obligations that have original expected durations of one year or less.
| 2025 |  | 2026 |  | 2027 |  | 2028 |  | 2029 |  | Thereafter |  | Total
Terminalling and storage |  |  |  |  |  |  |  |  |  |  |  |  |
Throughput and storage | $ | 11,237 |  |  | $ | 46,117 |  |  | $ | 47,500 |  |  | $ | 48,990 |  |  | $ | 50,393 |  |  | $ | 105,367 |  |  | $ | 309,604 |
Sulfur services |  |  |  |  |  |  |  |  |  |  |  |  |
Product sales | 3,559 |  |  | 14,237 |  |  | 14,237 |  |  | — |  |  | — |  |  | — |  |  | 32,033 |
Service revenues | 2,587 |  |  | 9,374 |  |  | 3,153 |  |  | 2,655 |  |  | 2,655 |  |  | 39,161 |  |  | 59,585 |
Specialty Products |  |  |  |  |  |  |  |  |  |  |  |  |
NGL product sales | 1,707 |  |  | 3,934 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5,641 |
Total | $ | 19,090 |  |  | $ | 73,662 |  |  | $ | 64,890 |  |  | $ | 51,645 |  |  | $ | 53,048 |  |  | $ | 144,528 |  |  | $ | 406,863 |

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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(1) -SubTopic 10 -Topic 606 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 + Details
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