v3.21.1
SEGMENT INFORMATION Table 1 - Results of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Revenues:    
Total revenues $ 361,646 $ 392,791
Operating income (loss):    
General and administrative expenses 24,492 22,971
Other depreciation and amortization expense 2,047 2,186
Operating income (loss) 98,289 (93,059)
Pipeline Segment    
Revenues:    
Total revenues 169,228 195,681
Storage Segment    
Revenues:    
Total revenues 108,574 123,217
Fuels Marketing Segment    
Revenues:    
Total revenues 83,855 73,902
Total segment    
Operating income (loss):    
Operating income (loss) 124,828 (67,902)
Total segment | Pipeline Segment    
Operating income (loss):    
Operating income (loss) 79,379 (122,924)
Total segment | Storage Segment    
Operating income (loss):    
Operating income (loss) 42,718 48,579
Total segment | Fuels Marketing Segment    
Operating income (loss):    
Operating income (loss) 2,731 6,443
Intersegment Eliminations [Member]    
Revenues:    
Total revenues $ (11) $ (9)