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Business Segments | 3 Months Ended
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Mar. 31, 2025
Segment Reporting [Abstract] |
Business Segments | BUSINESS SEGMENTS The Chief Operating Decision Maker ("CODM") is a group of executives, comprised of the Chief Executive Officer, Chief Financial Officer and Chief Operating Officer of the Partnership's general partner. The CODM may use different operating measures to assess operating results and allocate resources among the Partnership's four segments (outlined below), however the measure that is most consistent with the amounts included in the consolidated financial statements is operating income. The CODM utilizes this measure to evaluate the current financial performance and project the future financial performance of each segment to determine the allocation of capital resources. The Partnership's four reportable segments are comprised of (1) Terminalling and Storage, (2) Transportation, (3) Sulfur Services and (4) Specialty Products. The operating segments within each of our reportable segments have been aggregated based on the similarity of their economic and other characteristics, including different product type and services. The Terminalling and Storage segment generates revenue by providing terminalling, processing, and storage services for petroleum products and by-products. Storage revenue is earned through contracted monthly tank fixed fees, while throughput revenue is based on the volume moved through the Partnership’s terminals at contracted rates. Tolling revenue is derived from contracted monthly reservation fees and throughput volumes processed at the facility. The Transportation segment earns revenue by offering land and marine transportation services for petroleum products, by-products, chemicals, and specialty products. Land transportation revenue is based on mileage rates for line hauls or completion of contracted trips. Marine transportation revenue comes from time charters, calculated on a per-day basis, or from the completion of contracted trips. The Sulfur Services segment generates revenue by providing processing, manufacturing, marketing, and distribution services for sulfur and sulfur-based products. Revenue from sulfur and fertilizer product sales is recognized when the customer takes title to the product. Revenue from sulfur services is earned as services are performed during each monthly period. The Specialty Products segment earns revenue by providing marketing, distribution, and transportation services for NGLs as well as blending and packaging services for specialty lubricants and greases. NGL revenue is recognized upon the sale of products via truck, rail, or pipeline. For lubricants and greases, revenue is recognized upon their sale by truck or rail. The following tables present selected financial information with respect to the Partnership's operating segments for the three months ended March 31, 2025 and 2024.
| Terminalling and Storage |  | Transportation |  | Sulfur Services |  | Specialty Products |  | Indirect selling, general and administrative |  | Total
Three Months Ended March 31, 2025: |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers | $ | 21,549 |  |  | $ | 52,985 |  |  | $ | 48,704 |  |  | $ | 69,305 |  |  | $ | — |  |  | $ | 192,543 |
Intersegment operating revenues | 1,865 |  |  | 4,490 |  |  | — |  |  | 23 |  |  | — |  |  | 6,378 |
Total segment revenues | 23,414 |  |  | 57,475 |  |  | 48,704 |  |  | 69,328 |  |  | — |  |  | 198,921 |
Reconciliation of revenues: |  |  |  |  |  |  |  |  |  |  |
Elimination of intersegment revenues | (1,865) |  |  | (4,490) |  |  | — |  |  | (23) |  |  | — |  |  | (6,378) |
Total consolidated revenues | 21,549 |  |  | 52,985 |  |  | 48,704 |  |  | 69,305 |  |  | — |  |  | 192,543 |
Less: cost of products sold: |  |  |  |  |  |  |  |  |  |  |
Direct product costs | — |  |  | — |  |  | 26,819 |  |  | 57,627 |  |  | — |  |  | 84,446 |
Manufacturing costs (plant, labor, transportation, and other) | — |  |  | — |  |  | 5,183 |  |  | 5,418 |  |  | — |  |  | 10,601 |
Segment gross margin | 23,414 |  |  | 57,475 |  |  | 16,702 |  |  | 6,283 |  |  | — |  |  | 103,874 |
Less: |  |  |  |  |  |  |  |  |  |  |
Employment related expenses 2 | 6,552 |  |  | 15,254 |  |  | 2,163 |  |  | 1,452 |  |  | 3,094 |  |  | 28,515 |
Driver pay | — |  |  | 12,081 |  |  | — |  |  | — |  |  | — |  |  | 12,081 |
Pass-through expenses | — |  |  | 6,097 |  |  | 864 |  |  | — |  |  | — |  |  | 6,961 |
Utilities, materials, and supplies | 3,634 |  |  | 609 |  |  | 255 |  |  | 27 |  |  | — |  |  | 4,525 |
Repairs and maintenance | 1,399 |  |  | 4,494 |  |  | 208 |  |  | 1 |  |  | — |  |  | 6,102 |
Insurance related expenses | 1,471 |  |  | 3,950 |  |  | 160 |  |  | 34 |  |  | 89 |  |  | 5,704 |
Lease expenses | 1,156 |  |  | 4,636 |  |  | 125 |  |  | 22 |  |  | — |  |  | 5,939 |
Other segment expenses 1 | 1,524 |  |  | 2,394 |  |  | 1,654 |  |  | 244 |  |  | 1,492 |  |  | 7,308 |
Depreciation and amortization | 5,569 |  |  | 2,932 |  |  | 3,557 |  |  | 758 |  |  | — |  |  | 12,816 |
(Gain) loss on sale or disposition of property, plant and equipment | (1) |  |  | (478) |  |  | — |  |  | — |  |  | — |  |  | (479) |
| 21,304 |  |  | 51,969 |  |  | 8,986 |  |  | 2,538 |  |  | 4,675 |  |  | 89,472 |
Operating income (loss) | $ | 2,110 |  |  | $ | 5,506 |  |  | $ | 7,716 |  |  | $ | 3,745 |  |  | $ | (4,675) |  |  | $ | 14,402 |
Segment assets - as of March 31, 2025 | $ | 166,644 |  |  | $ | 169,819 |  |  | $ | 131,702 |  |  | $ | 65,245 |  |  | $ | — |  |  | $ | 533,410 |
Capital expenditures and plant turnaround costs | $ | 922 |  |  | $ | 2,822 |  |  | $ | 1,741 |  |  | $ | 123 |  |  | $ | — |  |  | $ | 5,608 |
1 Other segment expenses include outside services, property taxes, terminalling fees, regulatory expenses, professional fees, communications expenses, and many other less significant expense categories used in operations. 2 These employment expenses include allocated overhead from Martin Resource Management Corporation and exclude those that are part of our manufacturing operations. Payroll expenses in our manufacturing operations are included in cost of products sold.
| Terminalling and Storage |  | Transportation |  | Sulfur Services |  | Specialty Products |  | Indirect selling, general and administrative |  | Total
Three Months Ended March 31, 2024: |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers | $ | 22,517 |  |  | $ | 58,307 |  |  | $ | 33,681 |  |  | $ | 66,325 |  |  | $ | — |  |  | $ | 180,830 |
Intersegment operating revenues | 1,768 |  |  | 3,735 |  |  | — |  |  | 21 |  |  | — |  |  | 5,524 |
Total segment revenues | 24,285 |  |  | 62,042 |  |  | 33,681 |  |  | 66,346 |  |  | — |  |  | 186,354 |
Reconciliation of revenues: |  |  |  |  |  |  |  |  |  |  |
Elimination of intersegment revenues | (1,768) |  |  | (3,735) |  |  | — |  |  | (21) |  |  | — |  |  | (5,524) |
Total consolidated revenues | 22,517 |  |  | 58,307 |  |  | 33,681 |  |  | 66,325 |  |  | — |  |  | 180,830 |
|  |  |  |  |  |  |  |  |  |  | — |
Less: cost of products sold: |  |  |  |  |  |  |  |  |  |  |
Direct product costs | — |  |  | — |  |  | 18,444 |  |  | 54,185 |  |  | — |  |  | 72,629 |
Manufacturing costs (plant, labor, transportation, and other) | 18 |  |  | — |  |  | 4,326 |  |  | 5,459 |  |  | — |  |  | 9,803 |
Segment gross margin | 24,267 |  |  | 62,042 |  |  | 10,911 |  |  | 6,702 |  |  | — |  |  | 103,922 |
Less: |  |  |  |  |  |  |  |  |  |  |
Employment related expenses 2 | 5,580 |  |  | 14,741 |  |  | 1,835 |  |  | 1,021 |  |  | 3,130 |  |  | 26,307 |
Driver pay | — |  |  | 12,698 |  |  | — |  |  | — |  |  | — |  |  | 12,698 |
Pass-through expenses | — |  |  | 7,173 |  |  | 697 |  |  | — |  |  | — |  |  | 7,870 |
Utilities, materials, and supplies | 4,067 |  |  | 512 |  |  | 209 |  |  | 31 |  |  | — |  |  | 4,819 |
Repairs and maintenance | 1,387 |  |  | 4,460 |  |  | 141 |  |  | 3 |  |  | — |  |  | 5,991 |
Insurance related expenses | 1,496 |  |  | 3,195 |  |  | 171 |  |  | 26 |  |  | — |  |  | 4,888 |
Lease expenses | 966 |  |  | 3,872 |  |  | 87 |  |  | 38 |  |  | — |  |  | 4,963 |
Other segment expenses 1 | 1,821 |  |  | 2,189 |  |  | 1,104 |  |  | 229 |  |  | 706 |  |  | 6,049 |
Depreciation and amortization | 5,395 |  |  | 3,476 |  |  | 2,982 |  |  | 796 |  |  | — |  |  | 12,649 |
(Gain) loss on sale or disposition of property, plant and equipment | (102) |  |  | (105) |  |  | — |  |  | — |  |  | — |  |  | (207) |
| 20,610 |  |  | 52,211 |  |  | 7,226 |  |  | 2,144 |  |  | 3,836 |  |  | 86,027 |
Operating income (loss) | $ | 3,657 |  |  | $ | 9,831 |  |  | $ | 3,685 |  |  | $ | 4,558 |  |  | $ | (3,836) |  |  | $ | 17,895 |
Segment assets - as of March 31, 2024 | $ | 171,078 |  |  | $ | 158,127 |  |  | $ | 107,519 |  |  | $ | 75,353 |  |  | $ | — |  |  | $ | 512,077 |
Capital expenditures and plant turnaround costs | $ | 7,050 |  |  | $ | 2,855 |  |  | $ | 6,336 |  |  | $ | 1,152 |  |  | $ | — |  |  | $ | 17,393 |
1 Other segment expenses include outside services, property taxes, terminalling fees, regulatory expenses, professional fees, communications expenses, and many other less significant expense categories used in operations. 2 These employment expenses include allocated overhead from Martin Resource Management Corporation and exclude those that are part of our manufacturing operations. Payroll expenses in our manufacturing operations are included in cost of products sold.

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- Definition The entire disclosure for reporting segments including data and tables. 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