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Related Party Transactions - Quarterly Cash Distributions (Details) - USD ($)
$ in Thousands
1 Months Ended
May 15, 2018
Apr. 26, 2018
Feb. 12, 2018
Nov. 14, 2017
Aug. 11, 2017
May 12, 2017
Feb. 28, 2018
Feb. 28, 2017
Related Party Transaction [Line Items]                
Quarterly cash distributions paid     $ 22,777 $ 22,270 $ 21,783 $ 21,024   $ 20,500
Subsequent Event                
Related Party Transaction [Line Items]                
Quarterly cash distributions paid $ 23,997              
Delek US and affiliates                
Related Party Transaction [Line Items]                
Quarterly cash distributions paid             $ 16,200 $ 14,200
Delek US and affiliates | Subsequent Event                
Related Party Transaction [Line Items]                
Quarterly distributions declared   $ 17,200