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Business Segments - Income Statement (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information |  |  |
Total revenues | $ 1,018,878 | $ 882,431 | $ 672,142
Depreciation and Amortization | 56,280 | 56,751 | 61,462
Operating Income (Loss) after Eliminations | 51,263 | 57,280 | 46,502
Capital Expenditures and Plant Turnaround Costs | 31,133 | 22,929 | 26,777
Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 1,045,657 | 905,894 | 696,830
Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | (26,779) | (23,463) | (24,688)
Indirect selling, general, and administrative |  |  |
Segment Reporting Information |  |  |
Depreciation and Amortization | 0 | 0 | 0
Operating Income (Loss) after Eliminations | (16,914) | (16,129) | (17,909)
Capital Expenditures and Plant Turnaround Costs | 0 | 0 | 0
Terminalling and storage |  |  |
Segment Reporting Information |  |  |
Total revenues | 222,284 | 179,032 | 184,164
Depreciation and Amortization | 28,234 | 28,210 | 29,489
Operating Income (Loss) after Eliminations | 14,893 | 10,785 | 22,153
Capital Expenditures and Plant Turnaround Costs | 15,807 | 9,582 | 11,619
Terminalling and storage | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 228,793 | 185,629 | 191,041
Terminalling and storage | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | (6,509) | (6,597) | (6,877)
Natural gas liquids |  |  |
Segment Reporting Information |  |  |
Total revenues | 398,422 | 414,043 | 247,479
Depreciation and Amortization | 2,380 | 2,390 | 2,456
Operating Income (Loss) after Eliminations | (1,853) | 38,098 | 22,104
Capital Expenditures and Plant Turnaround Costs | 850 | 537 | 395
Natural gas liquids | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 398,425 | 414,043 | 247,484
Natural gas liquids | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | (3) | 0 | (5)
Sulfur services |  |  |
Segment Reporting Information |  |  |
Total revenues | 179,164 | 145,042 | 108,007
Depreciation and Amortization | 11,099 | 10,432 | 12,012
Operating Income (Loss) after Eliminations | 34,146 | 32,972 | 36,256
Capital Expenditures and Plant Turnaround Costs | 6,857 | 7,813 | 7,415
Sulfur services | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 179,164 | 145,042 | 108,020
Sulfur services | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | 0 | 0 | (13)
Transportation |  |  |
Segment Reporting Information |  |  |
Total revenues | 219,008 | 144,314 | 132,492
Depreciation and Amortization | 14,567 | 15,719 | 17,505
Operating Income (Loss) after Eliminations | 20,991 | (8,446) | (16,102)
Capital Expenditures and Plant Turnaround Costs | 7,619 | 4,997 | 7,348
Transportation | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 239,275 | 161,180 | 150,285
Transportation | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | $ (20,267) | $ (16,866) | $ (17,793)

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