Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Sales Revenue, Goods, Net	$ 368,006	$ 210,126	$ 741,367	$ 447,022
Sales Revenue, Services, Net	88,487	62,200	156,680	126,273
Other	16,596	15,051	31,142	28,933
Revenue, Net	473,089	287,377	929,189	602,228
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	340,107	176,842	689,105	373,789
Operating	73,346	54,707	125,429	104,899
General and administrative	26,752	20,775	48,396	41,835
Depreciation and amortization	25,602	25,055	50,201	49,106
Loss (gain) on disposal or impairment, net	(234)	1,685	2,176	14,992
Total expenses	465,573	279,064	915,307	584,621
Earnings from equity method investments	17,753	17,078	34,844	40,149
Loss on issuance of common units by equity method investee	0	0	0	(41)
Operating income	25,269	25,391	48,726	57,715
Other expenses (income), net:
Interest expense	13,477	18,011	27,344	35,588
Loss on early extinguishment of debt	8	0	19,930	0
Foreign currency transaction loss (gain)	(1,011)	1,543	(1,011)	3,012
Loss (gain) on sale or impairment of equity method investment	0	(9,120)	0	30,644
Other income, net	(441)	(490)	(591)	(678)
Total other expenses, net	12,033	9,944	45,672	68,566
Income (loss) from continuing operations before income taxes	13,236	15,447	3,054	(10,851)
Income tax expense (benefit)	3,625	4,658	3,720	(16,749)
Income (loss) from continuing operations	9,611	10,789	(666)	5,898
Loss from discontinued operations, net of income taxes	0	(2)	0	(4)
Net income (loss)	9,611	10,787	(666)	5,894
Less: net income attributable to noncontrolling interests	0	1,922	0	10,942
Net income (loss) attributable to SemGroup	9,611	8,865	(666)	(5,048)
Other comprehensive income, net of income tax	8,952	6,591	14,985	2,482
Comprehensive income	18,563	17,378	14,319	8,376
Less: comprehensive income attributable to noncontrolling interests	0	1,922	0	10,942
Comprehensive income (loss) attributable to SemGroup	$ 18,563	$ 15,456	$ 14,319	$ (2,566)
Net income (loss) attributable to SemGroup per common share (Note 10):
Basic	$ 0.15	$ 0.20	$ (0.01)	$ (0.11)
Diluted	$ 0.15	$ 0.19	$ (0.01)	$ (0.11)