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Related Party Transactions - Omnibus Agreement (Details) - Delek US and affiliates - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 01, 2018
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Operating and maintenance expense          
Related Party Transaction [Line Items]          
Expenses   $ 10,330 $ 18,336 $ 33,397 $ 38,851
Omnibus Agreement          
Related Party Transaction [Line Items]          
Related Party Annual Service Fee $ 4,100        
Omnibus Agreement | Delek US          
Related Party Transaction [Line Items]          
Reimbursement for costs incurred for asset failures     500   4,600
Omnibus Agreement | Delek US | Operating and maintenance expense          
Related Party Transaction [Line Items]          
Reimbursement for costs incurred for asset failures   0 300 100 6,000
Omnibus Agreement | Delek US | Other long term liabilities          
Related Party Transaction [Line Items]          
Reimbursement of capital expenditures by Delek Holdings     800 600 2,300
DPG Management Agreement, Operating Service And Construction Fee Paid To Partnership          
Related Party Transaction [Line Items]          
Expenses   $ 400 $ 800 $ 1,600 $ 3,600