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Related Party Transactions - Quarterly Cash Distributions Paid (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 12, 2020
Jan. 24, 2020
Nov. 12, 2019
Aug. 13, 2019
May 14, 2019
Feb. 12, 2019
Nov. 09, 2018
Aug. 13, 2018
May 15, 2018
Feb. 12, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]                          
Cash distributions paid     $ 30,379 $ 28,914 $ 27,438 $ 26,949 $ 25,960 $ 24,984 $ 23,997 $ 22,777 $ 113,700 $ 97,700 $ 85,600
Subsequent Event                          
Related Party Transaction [Line Items]                          
Cash distributions paid $ 30,634 $ 30,600                      
Delek                          
Related Party Transaction [Line Items]                          
Cash distributions paid                     $ 83,000 $ 70,100 $ 60,100
Delek | Subsequent Event                          
Related Party Transaction [Line Items]                          
Cash distributions declared $ 22,600