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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation of Revenue |  |  |  |
Total revenues |  | $ 882,431 | $ 672,142 | $ 847,118
Lubricant product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues | [1] | 103,809 | 103,300 | 122,257
Throughput and storage |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues | [1] | 75,223 | 80,864 | 87,397
Sulfur services |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 11,799 | 11,659 | 11,434
Natural gas liquids product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues | [1] | 414,043 | 247,479 | 366,502
Terminalling and storage segment |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 179,032 | 184,164 | 209,654
Terminalling and storage segment | Lubricant product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 103,809 | 103,300 | 122,257
Terminalling and storage segment | Throughput and storage |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 75,223 | 80,864 | 87,397
Transportation segment |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 144,314 | 132,492 | 159,622
Transportation segment | Land transportation |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 111,611 | 88,652 | 98,895
Transportation segment | Inland transportation |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 29,536 | 40,507 | 54,834
Transportation segment | Offshore transportation |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 3,167 | 3,333 | 5,893
Sulfur service segment |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 145,042 | 108,007 | 111,340
Sulfur service segment | Sulfur product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 32,416 | 24,176 | 30,135
Sulfur service segment | Fertilizer product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 100,827 | 72,172 | 69,771
Sulfur service segment | Sulfur services |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 11,799 | 11,659 | 11,434
Natural gas liquids |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | 414,043 | 247,479 | 366,502
Natural gas liquids | Natural gas liquids product sales |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues |  | $ 414,043 | $ 247,479 | $ 366,502
[1] | Related Party Transactions Included Above
| Year Ended December 31,
| 2021 |  | 2020 |  | 2019
Revenues: |  |  |  |  |
Terminalling and storage | $ | 62,677 |  |  | $ | 63,823 |  |  | $ | 71,733 |
Transportation | 20,046 |  |  | 21,997 |  |  | 24,243 |
Product sales | 479 |  |  | 317 |  |  | 931 |
Costs and expenses: |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Sulfur services | 9,980 |  |  | 10,519 |  |  | 10,765 |
Terminalling and storage | 27,866 |  |  | 18,429 |  |  | 23,859 |
Expenses: |  |  |  |  |
Operating expenses | 78,607 |  |  | 80,075 |  |  | 88,194 |
Selling, general and administrative | 32,924 |  |  | 32,886 |  |  | 32,622 |

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