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Business Segments - Income Statement (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information |  |  |
Total revenues | $ 882,431 | $ 672,142 | $ 847,118
Depreciation and Amortization | 56,751 | 61,462 | 60,060
Operating Income (Loss) after Eliminations | 57,280 | 46,502 | 58,104
Capital Expenditures and Plant Turnaround Costs | 22,929 | 26,777 | 37,923
Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 905,894 | 696,830 | 877,895
Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | (23,463) | (24,688) | (30,777)
Indirect selling, general, and administrative |  |  |
Segment Reporting Information |  |  |
Depreciation and Amortization | 0 | 0 | 0
Operating Income (Loss) after Eliminations | (16,129) | (17,909) | (17,981)
Capital Expenditures and Plant Turnaround Costs | 0 | 0 | 0
Terminalling and storage |  |  |
Segment Reporting Information |  |  |
Total revenues | 179,032 | 184,164 | 209,654
Depreciation and Amortization | 28,210 | 29,489 | 30,952
Operating Income (Loss) after Eliminations | 10,785 | 22,153 | 16,732
Capital Expenditures and Plant Turnaround Costs | 9,582 | 11,619 | 12,987
Terminalling and storage | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 185,629 | 191,041 | 216,313
Terminalling and storage | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | (6,597) | (6,877) | (6,659)
Natural gas liquids |  |  |
Segment Reporting Information |  |  |
Total revenues | 414,043 | 247,479 | 366,502
Depreciation and Amortization | 2,390 | 2,456 | 2,469
Operating Income (Loss) after Eliminations | 38,098 | 22,104 | 44,020
Capital Expenditures and Plant Turnaround Costs | 537 | 395 | 1,870
Natural gas liquids | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 414,043 | 247,484 | 366,502
Natural gas liquids | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | 0 | (5) | 0
Sulfur services |  |  |
Segment Reporting Information |  |  |
Total revenues | 145,042 | 108,007 | 111,340
Depreciation and Amortization | 10,432 | 12,012 | 11,332
Operating Income (Loss) after Eliminations | 32,972 | 36,256 | 22,721
Capital Expenditures and Plant Turnaround Costs | 7,813 | 7,415 | 14,853
Sulfur services | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 145,042 | 108,020 | 111,340
Sulfur services | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | 0 | (13) | 0
Transportation |  |  |
Segment Reporting Information |  |  |
Total revenues | 144,314 | 132,492 | 159,622
Depreciation and Amortization | 15,719 | 17,505 | 15,307
Operating Income (Loss) after Eliminations | (8,446) | (16,102) | (7,388)
Capital Expenditures and Plant Turnaround Costs | 4,997 | 7,348 | 8,213
Transportation | Operating Revenues |  |  |
Segment Reporting Information |  |  |
Total revenues | 161,180 | 150,285 | 183,740
Transportation | Intersegment Eliminations |  |  |
Segment Reporting Information |  |  |
Total revenues | $ (16,866) | $ (17,793) | $ (24,118)

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