Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Basic and diluted earnings per share

The following summarizes the calculation of basic earnings per share for the three months ended March 31, 2017 and 2016 (in thousands, except per share amounts):

	Three Months Ended March 31, 2017								Three Months Ended March 31, 2016
	Continuing Operations			Discontinued Operations		Net			Continuing Operations			Discontinued Operations			Net
Loss	$	(10,277	)	$	—	$	(10,277	)	$	(4,891	)	$	(2	)	$	(4,893	)
less: Income attributable to noncontrolling interests	—			—		—			9,020			—			9,020
Loss attributable to SemGroup	$	(10,277	)	$	—	$	(10,277	)	$	(13,911	)	$	(2	)	$	(13,913	)
Weighted average common stock outstanding	65,692			65,692		65,692			43,870			43,870			43,870
Basic loss per share	$	(0.16	)	$	—	$	(0.16	)	$	(0.32	)	$	—		$	(0.32	)

The following summarizes the calculation of diluted earnings per share for the three months ended March 31, 2017 and 2016 (in thousands, except per share amounts):

	Three Months Ended March 31, 2017								Three Months Ended March 31, 2016
	Continuing Operations			Discontinued Operations		Net			Continuing Operations			Discontinued Operations			Net
Loss	$	(10,277	)	$	—	$	(10,277	)	$	(4,891	)	$	(2	)	$	(4,893	)
less: Income attributable to noncontrolling interests	—			—		—			9,020			—			9,020
Loss attributable to SemGroup	$	(10,277	)	$	—	$	(10,277	)	$	(13,911	)	$	(2	)	$	(13,913	)
Weighted average common stock outstanding	65,692			65,692		65,692			43,870			43,870			43,870
Effect of dilutive securities	—			—		—			—			—			—
Diluted weighted average common stock outstanding	65,692			65,692		65,692			43,870			43,870			43,870
Diluted loss per share	$	(0.16	)	$	—	$	(0.16	)	$	(0.32	)	$	—		$	(0.32	)