Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues:
Product	$ 209,202	$ 335,331	$ 708,408	$ 962,879
Service	29,800	28,565	86,727	96,782
Other	38,850	27,626	126,525	75,426
Total revenues	277,852	391,522	921,660	1,135,087
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	189,830	313,490	651,283	896,871
Operating	52,367	41,772	172,750	116,384
General and administrative	16,680	16,883	53,073	56,443
Depreciation and amortization	12,081	12,894	35,687	38,355
Gain on disposal or impairment of long-lived assets, net	(3,615)	0	(3,496)	(136)
Total expenses	267,343	385,039	909,297	1,107,917
Earnings from equity method investments	3,116	4,016	22,903	10,166
Operating income	13,625	10,499	35,266	37,336
Other expenses (income):
Interest expense	1,992	6,013	7,763	49,321
Currency (gain) loss	355	(2,874)	358	(3,430)
Other (income) expense, net	9,354	(8,973)	16,783	(14,564)
Total other expenses, net	11,701	(5,834)	24,904	31,327
Income (loss) from continuing operations before income taxes	1,924	16,333	10,362	6,009
Income tax (benefit) expense	2,091	1,308	985	3,202
Income (loss) from continuing operations	(167)	15,025	9,377	2,807
Income ( loss) from discontinued operations, net of income taxes	(265)	(686)	(456)	(735)
Net income	(432)	14,339	8,921	2,072
Less: net income attributable to noncontrolling interests	2,336	0	7,915	0
Net Income (Loss) Attributable to Parent	(2,768)	14,339	1,006	2,072
Other comprehensive income (loss), net of income taxes	12,072	(18,103)	14,930	(11,465)
Comprehensive income	11,640	(3,764)	23,851	(9,393)
Less: comprehensive income attributable to noncontrolling interests	2,336	0	7,915	0
Comprehensive income (loss) attributable to SemGroup	$ 9,304	$ (3,764)	$ 15,936	$ (9,393)
Net income per common share (Note 11):
Basic	$ (0.07)	$ 0.34	$ 0.02	$ 0.05
Diluted	$ (0.07)	$ 0.34	$ 0.02	$ (0.15)