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Business Segment Information (Schedule of Segment Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | $ 196,190 | $ 153,862 | $ 572,914 | $ 462,095
Total revenues | 721,248 | 518,821 | 2,074,920 | 1,543,895
Offshore Pipeline Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 89,805 | 69,479 | 239,958 | 207,084
Sodium Minerals and Sulfur Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 312,681 | 237,651 | 916,963 | 702,025
Onshore Facilities and Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 240,967 | 162,975 | 708,110 | 498,113
Marine Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 77,795 | 48,716 | 209,889 | 136,673
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 196,190 | 153,862 | 572,914 | 462,095
Capital expenditures | 151,768 | 79,217 | 313,470 | 227,221
Total revenues | 721,248 | 518,821 | 2,074,920 | 1,543,895
Operating Segments | Offshore Pipeline Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 91,402 | 76,045 | 281,286 | 243,420
Capital expenditures | 86,893 | 3,819 | 166,703 | 34,768
Total revenues | 89,805 | 69,479 | 239,958 | 207,084
Operating Segments | Sodium Minerals and Sulfur Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 80,067 | 39,649 | 219,143 | 121,563
Capital expenditures | 49,452 | 67,583 | 114,698 | 158,181
Total revenues | 315,334 | 240,048 | 924,534 | 708,612
Operating Segments | Onshore Facilities and Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 9,442 | 29,145 | 27,496 | 72,512
Capital expenditures | 848 | 929 | 3,365 | 4,515
Total revenues | 238,483 | 161,296 | 700,909 | 493,852
Operating Segments | Marine Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 15,279 | 9,023 | 44,989 | 24,600
Capital expenditures | 14,575 | 6,886 | 28,704 | 29,757
Total revenues | 77,626 | 47,998 | 209,519 | 134,347
Intersegment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Intersegment | Offshore Pipeline Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Intersegment | Sodium Minerals and Sulfur Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | (2,653) | (2,397) | (7,571) | (6,587)
Intersegment | Onshore Facilities and Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 2,484 | 1,679 | 7,201 | 4,261
Intersegment | Marine Transportation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 169 | $ 718 | $ 370 | $ 2,326

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- Definition Revenues less product costs, operating expenses (excluding non-cash charges such as depreciation and amortization), and segment general and administrative expenses, plus our equity in distributable cash generated by our equity investees. Also excludes the non-cash effects of our stock appreciation rights compensation plan and includes the non-income portion of payments received under direct financing leases. + References No definition available. + Details
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