Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 58,326	$ 62,021	$ 9,884
Currency translation adjustments	(806)	(702)	(24)
Goodwill, Ending Balance	48,032	58,326	62,021
SemGas [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	13,052
Goodwill, Ending Balance	13,052	13,052
Crude Transportation [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	36,116
Goodwill, Impairment Loss	(9,488)
Goodwill, Ending Balance	$ 26,628	36,116
Barcas Field Services, LLC [Member] | Crude Transportation [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period			28,322
Goodwill, Purchase Accounting Adjustments		(98)
Mid-America Midstream Gas Services, LLC [Member] | SemGas [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period			$ 23,839
Goodwill, Purchase Accounting Adjustments		(10,787)
Chesapeake crude oil trucking assets [Member] | Crude Transportation [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 7,892