v3.10.0.1
SEGMENT INFORMATION Table 1 - Results of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues:        
Total revenues $ 490,363 $ 440,566 $ 1,452,448 $ 1,363,484
Operating income:        
General and administrative expenses 27,817 25,003 75,572 83,202
Other depreciation and amortization expense 2,276 2,189 6,645 6,581
Operating income (loss) 95,277 91,717 273,595 262,260
Pipeline Segment        
Revenues:        
Total revenues 162,843 137,426 449,909 385,406
Storage Segment        
Revenues:        
Total revenues 154,130 158,071 466,908 464,061
Storage Segment | Third Party Revenue [Member]        
Revenues:        
Total revenues 152,411 155,677 461,109 453,995
Storage Segment | Intersegment Revenue [Member]        
Revenues:        
Total revenues 1,719 2,394 5,799 10,066
Fuels Marketing Segment        
Revenues:        
Total revenues 175,109 147,463 541,430 524,083
Operating Segments [Member]        
Operating income:        
Operating income (loss) 125,370 118,909 355,812 352,043
Operating Segments [Member] | Pipeline Segment        
Operating income:        
Operating income (loss) 77,021 61,119 197,794 179,015
Operating Segments [Member] | Storage Segment        
Operating income:        
Operating income (loss) 46,459 59,323 146,904 169,131
Operating Segments [Member] | Fuels Marketing Segment        
Operating income:        
Operating income (loss) 1,890 (1,532) 11,114 3,897
Intersegment Eliminations [Member]        
Revenues:        
Total revenues (1,719) (2,394) (5,799) (10,066)
Operating income:        
Operating income (loss) 0 (1) 0 0
Corporate, Non-Segment [Member]        
Operating income:        
General and administrative expenses 27,817 25,003 75,572 83,202
Other depreciation and amortization expense $ 2,276 $ 2,189 $ 6,645 $ 6,581