Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, beginning balance		$ 150,978	$ 162,223	$ 173,065
Amortization		(30,628)	(10,928)	(10,334)
Currency translation adjustments		95	(317)	(508)
Finite-Lived Intangible Assets, Net, ending balance	$ 398,643	398,643	$ 150,978	$ 162,223
HFOTCO LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Customer contract intangible asset acquired		291,000
Crude Transportation [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	$ (12,100)	(12,087)
SemMexico [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Reclassification to Held-For-Sale		$ (715)