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Business Segment Information (Schedule Of Segment Information) (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($) segment | Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items] |  |
Segment margin | $ 138,645 | $ 144,881
Total revenues | $ 415,491 | 378,414
Number of Reportable Segments | segment | 4 |
Offshore pipeline transportation |  |
Segment Reporting Information [Line Items] |  |
Total revenues | $ 85,128 | 76,126
Refinery services |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 45,046 | 42,536
Marine transportation |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 50,302 | 52,036
Supply and logistics |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 235,015 | 207,716
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 138,645 | 144,881
Capital Expenditures | 58,987 | 126,158
External customers | 415,491 | 378,414
Operating Segments | Offshore pipeline transportation |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 87,089 | 78,618
Capital Expenditures | 2,239 | 28,825
External customers | 85,405 | 76,126
Operating Segments | Refinery services |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 17,496 | 21,199
Capital Expenditures | 513 | 325
External customers | 47,271 | 44,750
Operating Segments | Marine transportation |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 12,963 | 18,916
Capital Expenditures | 9,533 | 8,429
External customers | 48,204 | 50,660
Operating Segments | Supply and logistics |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 21,097 | 26,148
Capital Expenditures | 46,702 | 88,579
External customers | 234,611 | 206,878
Intersegment Eliminations |  |
Segment Reporting Information [Line Items] |  |
Intersegment | 0 | 0
Intersegment Eliminations | Offshore pipeline transportation |  |
Segment Reporting Information [Line Items] |  |
Intersegment | (277) | 0
Intersegment Eliminations | Refinery services |  |
Segment Reporting Information [Line Items] |  |
Intersegment | (2,225) | (2,214)
Intersegment Eliminations | Marine transportation |  |
Segment Reporting Information [Line Items] |  |
Intersegment | 2,098 | 1,376
Intersegment Eliminations | Supply and logistics |  |
Segment Reporting Information [Line Items] |  |
Intersegment | $ 404 | $ 838

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- Definition Capital expenditures include both maintenance and growth capital expenditures, such as fixed asset additions (including enhancements to existing facilities and construction of internal growth projects) as well as acquisitions of businesses and interests in equity investees. + References No definition available. + Details
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- Definition Amount of revenue from external customers for the reportable segment. + References No definition available. + Details
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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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