Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Basic and diluted earnings per share

The following summarizes the calculation of basic earnings per share for the three months and nine months ended September 30, 2015 and 2014 (in thousands, except per share amounts):

	Three Months Ended September 30, 2015							Three Months Ended September 30, 2014
	Continuing Operations		Discontinued Operations			Net		Continuing Operations		Discontinued Operations		Net
Income (loss)	$	9,581	$	(1	)	$	9,580	$	32,196	$	—	$	32,196
less: Income attributable to noncontrolling interests	4,707		—			4,707		6,934		—		6,934
Income (loss) attributable to SemGroup	$	4,874	$	(1	)	$	4,873	$	25,262	$	—	$	25,262
Weighted average common stock outstanding	43,808		43,808			43,808		42,708		42,708		42,708
Basic earnings per share	$	0.11	$	—		$	0.11	$	0.59	$	—	$	0.59

	Nine Months Ended September 30, 2015							Nine Months Ended September 30, 2014
	Continuing Operations		Discontinued Operations			Net		Continuing Operations		Discontinued Operations			Net
Income (loss)	$	43,792	$	(3	)	$	43,789	$	39,355	$	(5	)	$	39,350
less: Income attributable to noncontrolling interests	14,153		—			14,153		18,184		—			18,184
Income (loss) attributable to SemGroup	$	29,639	$	(3	)	$	29,636	$	21,171	$	(5	)	$	21,166
Weighted average common stock outstanding	43,775		43,775			43,775		42,674		42,674			42,674
Basic earnings per share	$	0.68	$	—		$	0.68	$	0.50	$	—		$	0.50

The following summarizes the calculation of diluted earnings per share for the three months and nine months ended September 30, 2015 and 2014 (in thousands, except per share amounts):

	Three Months Ended September 30, 2015							Three Months Ended September 30, 2014
	Continuing Operations		Discontinued Operations			Net		Continuing Operations		Discontinued Operations		Net
Income (loss)	$	9,581	$	(1	)	$	9,580	$	32,196	$	—	$	32,196
less: Income attributable to noncontrolling interests	4,707		—			4,707		6,934		—		6,934
Income (loss) attributable to SemGroup	$	4,874	$	(1	)	$	4,873	$	25,262	$	—	$	25,262
Weighted average common stock outstanding	43,808		43,808			43,808		42,708		42,708		42,708
Effect of dilutive securities	163		163			163		305		305		305
Diluted weighted average common stock outstanding	43,971		43,971			43,971		43,013		43,013		43,013
Diluted earnings per share	$	0.11	$	—		$	0.11	$	0.59	$	—	$	0.59

	Nine Months Ended September 30, 2015							Nine Months Ended September 30, 2014
	Continuing Operations		Discontinued Operations			Net		Continuing Operations		Discontinued Operations			Net
Income (loss)	$	43,792	$	(3	)	$	43,789	$	39,355	$	(5	)	$	39,350
less: Income attributable to noncontrolling interests	14,153		—			14,153		18,184		—			18,184
Income (loss) attributable to SemGroup	$	29,639	$	(3	)	$	29,636	$	21,171	$	(5	)	$	21,166
Weighted average common stock outstanding	43,775		43,775			43,775		42,674		42,674			42,674
Effect of dilutive securities	194		194			194		302		302			302
Diluted weighted average common stock outstanding	43,969		43,969			43,969		42,976		42,976			42,976
Diluted earnings per share	$	0.67	$	—		$	0.67	$	0.49	$	—		$	0.49