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Related Party Transactions - Omnibus Agreement (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
May 07, 2018
Feb. 12, 2018
Nov. 14, 2017
Aug. 11, 2017
May 12, 2017
May 31, 2018
Feb. 28, 2018
Feb. 28, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Related Party Transaction [Line Items]                        
Distribution Made to Limited Partner, Cash Distributions Paid $ 23,997 $ 22,777 $ 22,270 $ 21,783 $ 21,000     $ 20,500        
Reimbursement of capital expenditures by Delek                     $ 2,700 $ 3,835
Accrual for environmental loss contingencies, period increase (decrease)                   $ 300 100 400
Delek US and affiliates                        
Related Party Transaction [Line Items]                        
Distribution Made to Limited Partner, Cash Distributions Paid         $ 14,700 $ 17,200 $ 16,200 $ 14,200        
Omnibus Agreement | Delek US | Delek US and affiliates | Operating and maintenance expense                        
Related Party Transaction [Line Items]                        
Reimbursement for costs incurred for asset failures                     7,800  
Omnibus Agreement | Delek US | Delek US and affiliates | Other long term liabilities                        
Related Party Transaction [Line Items]                        
Reimbursement of capital expenditures by Delek                 $ 400 $ 800 $ 2,700 $ 3,800