Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, beginning balance	$ 162,223	$ 173,065	$ 174,838
Amortization	(10,928)	(10,334)	(15,875)
Currency translation adjustments	(317)	(508)	(545)
Finite-Lived Intangible Assets, Net, ending balance	$ 150,978	$ 162,223	173,065
Barcas Field Services, LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Purchase Accounting Adjustments			(50)
Mid-America Midstream Gas Services, LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Purchase Accounting Adjustments			(2,313)
Chesapeake crude oil trucking assets [Member]
Finite-Lived Intangible Assets [Line Items]
Customer contract intangible asset acquired			$ 17,010