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Revenue Recognition (Revenue Expected to be Recognized in Future Periods) (Details) $ in Thousands | Dec. 31, 2018 USD ($)
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Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 74,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 27,010
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 65,436
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 51,256
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 20,128
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 57,090
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 34,562
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 20,139
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 22,828
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 4,283
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 12,076
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 123,371
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Offshore pipeline transportation services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 318,293
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Marine transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 47,138
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Onshore facilities and transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 146,948

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