Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Product	$ 1,145,104	$ 953,738	$ 1,237,313
Service	140,198	117,721	123,345
Other	141,714	166,038	104,588
Total revenues	1,427,016	1,237,497	1,465,246
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	1,020,100	874,885	1,144,439
Operating	223,585	224,700	155,041
General and administrative	78,597	71,918	75,447
Depreciation and amortization	66,409	48,210	49,823
Loss (gain) on disposal or impairment of long-lived assets, net	239	3,531	(301)
Total expenses	1,388,452	1,216,182	1,425,051
Earnings from equity method investments	52,477	36,036	15,004
Gain on issuance of common units by equity method investee	26,873	0	0
Operating income (loss)	117,914	57,351	55,199
Other expenses (income):
Interest expense	25,142	8,902	60,138
Foreign currency transaction loss (gain)	(1,633)	298	(3,450)
Other expense (income), net	45,906	21,271	(11,539)
Total other expenses, net	69,415	30,471	45,149
Income (loss) from continuing operations before income taxes	48,499	26,880	10,050
Income tax expense (benefit)	(17,254)	(2,078)	(2,310)
Income (loss) from continuing operations	65,753	28,958	12,360
Income (loss) from discontinued operations, net of income taxes	59	2,939	(9,548)
Net income (loss)	65,812	31,897	2,812
Less: net income attributable to noncontrolling interests	17,710	9,797	435
Net income (loss) attributable to SemGroup	48,102	22,100	2,377
Other comprehensive income (loss):
Currency translation adjustments	(6,363)	12,635	(13,075)
Other, net of income tax	4,808	(59)	(1,915)
Total other comprehensive income (loss)	(1,555)	12,576	(14,990)
Comprehensive income (loss)	64,257	44,473	(12,178)
Less: comprehensive income attributable to noncontrolling interests	17,710	9,797	435
Comprehensive income (loss) attributable to SemGroup	$ 46,547	$ 34,676	$ (12,613)
Net income (loss) per common share (Note 18):
Basic	$ 1.14	$ 0.53	$ 0.06
Diluted	$ 1.13	$ 0.52	$ (0.06)