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Segment Data - Schedule of Segments (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
Mar. 01, 2018
Segment Reporting Information [Line Items]                        
Affiliate [1]                 $ 382,666 $ 261,014 $ 240,809  
Third party                 180,752 322,978 416,800  
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  
Cost of materials and other                 269,094 336,473 429,061  
Operating expenses (excluding depreciation and amortization)                 56,279 74,157 58,744  
Segment contribution margin                 238,045 173,362 169,804  
General and administrative expenses                 22,587 20,815 17,166  
Depreciation and amortization                 35,731 26,701 25,990  
Other operating (income) expense, net                 (66) 34 891  
Operating income 45,105 $ 51,765 $ 47,881 $ 35,042 29,715 $ 34,729 $ 32,256 $ 29,111 179,793 125,812 125,757  
Capital spending                 15,449 9,987 11,565  
Total assets 956,417       744,447       956,417 744,447    
Big Spring Logistic Assets                        
Segment Reporting Information [Line Items]                        
Capitalized acquisition costs                     400 $ 400
Delek Trucking                        
Segment Reporting Information [Line Items]                        
Capitalized acquisition costs 300               300      
Big Spring Gathering Asset                        
Segment Reporting Information [Line Items]                        
Capitalized acquisition costs 700               700      
Pipelines and Transportation                        
Segment Reporting Information [Line Items]                        
Affiliate                 233,873 155,211 138,418  
Third party                 17,596 23,107 15,149  
Revenue from contracts with customers                 251,469 178,318 153,567  
Operating expenses (excluding depreciation and amortization)                 42,267 54,827 39,934  
Segment contribution margin                 163,268 100,665 93,755  
Capital spending                 7,631 6,600 6,840  
Total assets 723,317       509,666       723,317 509,666    
Pipelines and Transportation | Service                        
Segment Reporting Information [Line Items]                        
Cost of materials and other                 45,934 22,826 19,878  
Wholesale Marketing and Terminalling                        
Segment Reporting Information [Line Items]                        
Affiliate                 148,793 105,803 102,391  
Third party                 163,156 299,871 401,651  
Revenue from contracts with customers                 311,949 405,674 504,042  
Operating expenses (excluding depreciation and amortization)                 14,012 19,330 18,810  
Segment contribution margin                 74,777 72,697 76,049  
Capital spending                 7,818 3,387 4,725  
Total assets 206,918       214,259       206,918 214,259    
Wholesale Marketing and Terminalling | Service                        
Segment Reporting Information [Line Items]                        
Cost of materials and other                 223,160 313,647 $ 409,183  
Other                        
Segment Reporting Information [Line Items]                        
Total assets $ 26,182       $ 20,522       $ 26,182 $ 20,522    
[1] See Note 4 for a description of our material affiliate revenue transactions.