v3.8.0.1
REVENUE FROM CONTRACTS WITH CUSTOMERS Table 4 - Disaggregation of Revenues (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Disaggregation of Revenue [Line Items]    
Revenues $ 475,881 $ 487,430
Intersegment Eliminations [Member]    
Disaggregation of Revenue [Line Items]    
Revenues (2,075) (3,943)
Pipeline Segment    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 136,736 121,240
Revenues 136,790 121,240
Lessor revenues 54 0
Pipeline Segment | Crude Oil Pipelines [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 53,437 36,747
Pipeline Segment | Refined Products and Ammonia Pipelines [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 83,299 84,493
Storage Segment    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 145,366 137,650
Revenues 155,328 147,431
Lessor revenues 9,962 9,781
Storage Segment | Throughput Terminal [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 20,016 20,690
Storage Segment | Storage Terminal [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 125,350 116,960
Fuels Marketing Segment    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 185,838 222,702
Revenues $ 185,838 $ 222,702