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Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ 140,112 | $ 142,268 | $ 117,637 | $ 163,401 | $ 138,610 | $ 137,556 | $ 155,342 | $ 152,483 | $ 563,418 | $ 583,992 | $ 657,609
Lease Revenue - Affiliate |  |  |  |  |  |  |  |  | 260,088 | 193,865 |
Amortization of customer contract intangible assets |  |  |  |  |  |  |  |  | 7,211 | 7,211 | 6,009
Service Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 18,230 | 23,730 |
Service Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 51,400 | 35,208 |
Product Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 162,522 | 299,248 |
Product Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 71,178 | 31,941 |
Pipelines and Transportation |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 251,469 | 178,318 | 153,567
Lease Revenue - Affiliate |  |  |  |  |  |  |  |  | 216,105 | 155,211 |
Pipelines and Transportation | Service Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 17,596 | 23,107 |
Pipelines and Transportation | Service Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 17,768 | 0 |
Pipelines and Transportation | Product Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 0 | 0 |
Pipelines and Transportation | Product Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 0 | 0 |
Wholesale Marketing and Terminalling |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 311,949 | 405,674 | $ 504,042
Lease Revenue - Affiliate |  |  |  |  |  |  |  |  | 43,983 | 38,654 |
Wholesale Marketing and Terminalling | Service Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 634 | 623 |
Wholesale Marketing and Terminalling | Service Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 33,632 | 35,208 |
Wholesale Marketing and Terminalling | Product Revenue - Third Party |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | 162,522 | 299,248 |
Wholesale Marketing and Terminalling | Product Revenue - Affiliate |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | $ 71,178 | $ 31,941 |

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