Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, beginning balance	$ 398,643	$ 150,978	$ 162,223
Amortization	(33,605)	(30,628)	(10,928)
Currency translation adjustments		95	(317)
Finite-Lived Intangible Assets, Net, ending balance	$ 365,038	398,643	$ 150,978
U.S. Liquids [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived		(12,087)
HFOTCO LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Customer contract intangible asset acquired		291,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Sem Mexico [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Reclassification to Held-For-Sale		$ (715)