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Revenue Recognition (Disaggregated Revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Disaggregation of Revenue [Line Items] |  |
Total revenues | $ 631,947 | $ 521,219
Fee-based Revenues [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 137,473 | 129,109
Product Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 467,575 | 369,601
Refinery Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 26,899 | 22,509
Offshore Pipeline Transportation [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 68,068 | 64,384
Offshore Pipeline Transportation [Member] | Fee-based Revenues [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 68,068 | 64,384
Offshore Pipeline Transportation [Member] | Product Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Offshore Pipeline Transportation [Member] | Refinery Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Sodium Minerals and Sulfur Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 285,674 | 227,287
Sodium Minerals and Sulfur Services [Member] | Fee-based Revenues [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Sodium Minerals and Sulfur Services [Member] | Product Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 258,775 | 204,778
Sodium Minerals and Sulfur Services [Member] | Refinery Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 26,899 | 22,509
Marine Transportation [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 55,774 | 40,331
Marine Transportation [Member] | Fee-based Revenues [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 55,774 | 40,331
Marine Transportation [Member] | Product Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Marine Transportation [Member] | Refinery Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Onshore Facilities and Transportation [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 222,431 | 189,217
Onshore Facilities and Transportation [Member] | Fee-based Revenues [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 13,631 | 24,394
Onshore Facilities and Transportation [Member] | Product Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 208,800 | 164,823
Onshore Facilities and Transportation [Member] | Refinery Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | $ 0 | $ 0

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