Disposals And Impairments of Long-Lived Assets (Details Textual) (USD $)	12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 SemStream [Member]	Dec. 31, 2011 SemStream [Member] SemStream Arizona Residential Propane Business [Member]	Dec. 31, 2011 SemLogistics [Member] Customer	Oct. 02, 2011 SemLogistics [Member]	Dec. 31, 2011 SemStream [Member]	Nov. 01, 2011 SemStream [Member]
Loss on goodwill impairment, pre-tax			$ (47,804,000)			$ (3,600,000)
Working capital adjustment										2,100,000
Cash proceeds from divestiture	0	12,250,000	93,054,000						93,000,000
Estimated fair value									184,000,000
Gain on contribution of SemStream assets to NGL energy, pre-tax									44,300,000
Write-off of software					1,600,000
Write-off capitalized loan fees					2,200,000
Present value of estimated future cash flows, discounted rate						9.40%
Impairment of intangible assets						5,000,000
Impairment of long-lived assets held-for-use						0
Number of customers							2
Goodwill	$ 62,021,000	$ 9,884,000	$ 9,453,000	$ 107,823,000				$ 44,700,000