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Business Segments
 3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Business Segments BUSINESS SEGMENTS
    The Partnership has four reportable segments: (1) terminalling and storage, (2) transportation, (3) sulfur services and (4) specialty products. The Partnership’s reportable segments are strategic business units that offer different products and services. The operating income of these segments is reviewed by the chief operating decision maker to assess performance and make business decisions. Effective January 1, 2023, the Partnership reorganized its Terminalling and Storage and Natural Gas Liquids operating segments. The underground NGL storage division of the Partnership's Natural Gas Liquids operating segment was moved to the Terminalling and Storage operating segment. Further, the Partnership's packaged lubricants and grease businesses were moved from the Terminalling and Storage operating segment to the Specialty Products operating segment (formerly named the Natural Gas Liquids segment). The Partnership evaluates the performance of its reportable segments based on operating income. There is no allocation of interest expense.

Three Months Ended March 31, 2024Operating RevenuesIntersegment Revenues EliminationsOperating Revenues after EliminationsDepreciation and AmortizationOperating Income (Loss) after EliminationsCapital Expenditures and Plant Turnaround Costs
Terminalling and storage$24,285 $(1,768)$22,517 $5,395 $1,957 $7,050 
Transportation62,042 (3,735)58,307 3,476 6,042 2,855 
Sulfur services33,681 — 33,681 2,982 6,773 6,336 
Specialty products66,346 (21)66,325 796 6,959 1,152 
Indirect selling, general and administrative— — — — (3,836)— 
Total$186,354 $(5,524)$180,830 $12,649 $17,895 $17,393 
Three Months Ended March 31, 2023Operating RevenuesIntersegment Revenues EliminationsOperating Revenues after EliminationsDepreciation and AmortizationOperating Income (Loss) after EliminationsCapital Expenditures and Plant Turnaround Costs
Terminalling and storage$23,919 $(3,061)$20,858 $5,599 $64 $3,785 
Transportation61,939 (6,216)55,723 3,762 3,179 1,528 
Sulfur services35,679 — 35,679 2,677 7,404 2,048 
Specialty products132,277 (8)132,269 863 11,056 259 
Indirect selling, general and administrative— — — — (4,198)— 
Total$253,814 $(9,285)$244,529 $12,901 $17,505 $7,620 

    The Partnership's assets by reportable segment as of March 31, 2024 and December 31, 2023, are as follows:
March 31, 2024December 31, 2023
Total assets:  
Terminalling and storage$171,078 $171,320 
Transportation158,127 161,506 
Sulfur services107,519 103,779 
Specialty products75,353 72,770 
Total assets$512,077 $509,375