Related Party Transactions - Quarterly Cash Distributions (Details) - USD ($) $ in Thousands								1 Months Ended
	Aug. 13, 2018	Jul. 24, 2018	May 07, 2018	Feb. 12, 2018	Nov. 14, 2017	Aug. 11, 2017	May 12, 2017	May 31, 2018	Feb. 28, 2018	Feb. 28, 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
Subsequent Event
Related Party Transaction [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid	$ 24,984
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
Delek US and affiliates | Subsequent Event
Related Party Transaction [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared		$ 18,000