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Related Party Transactions - Summary of Transactions (Details) - Delek US and affiliates - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Related Party Transaction [Line Items]        
Related Party Transaction, Other Revenues from Transactions with Related Party $ 61,918 $ 53,080 $ 124,883 $ 114,724
General and administrative expenses 1,748 2,505 3,118 3,462
Cost of goods sold        
Related Party Transaction [Line Items]        
Expenses 73,213 99,515 152,647 181,715
Operating and maintenance expense        
Related Party Transaction [Line Items]        
Expenses $ 10,590 $ 11,422 $ 20,515 $ 18,911