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Major Customers and Concentration Of Risks (Details)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Concentration Risk [Line Items] | |||
| Number of employees | 1,459 | ||
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Customer Concentration Risk [Member]
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 14.00% | 21.00% | |
| Concentration Risk, Benchmark Percentage | 10.00% | ||
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Refined Products Segment [Member]
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| Concentration Risk [Line Items] | |||
| Number of employees | 842 | ||
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Refined Products Segment [Member] | Unionized Employees Concentration Risk [Member]
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 26.00% | ||
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Crude Oil Pipeline and Terminals Segment [Member]
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| Concentration Risk [Line Items] | |||
| Number of employees | 51 | ||
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Crude Oil Pipeline and Terminals Segment [Member] | Unionized Employees Concentration Risk [Member]
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 0.00% | ||
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Marine Storage Segment [Member]
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| Concentration Risk [Line Items] | |||
| Number of employees | 171 | ||
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Marine Storage Segment [Member] | Unionized Employees Concentration Risk [Member]
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 16.00% | ||