Segments (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

	Three Months Ended March 31, 2013
	Crude		SemStream			SemCAMS			SemGas			SemLogistics			SemMexico			Corporate and Other			Consolidated
									(dollars in thousands)
Revenues:
External	$	171,232	$	—		$	35,781		$	34,654		$	3,035		$	42,994		$	—		$	287,696
Intersegment	—		—			—			4,085			—			—			(4,085		)	—
Total revenues	171,232		—			35,781			38,739			3,035			42,994			(4,085		)	287,696
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	148,451		—			183			29,171			—			38,649			(4,085		)	212,369
Operating	5,738		1			26,884			4,144			1,839			2,165			—			40,771
General and administrative	3,850		156			4,145			1,591			1,120			2,222			3,953			17,037
Depreciation and amortization	3,507		—			2,656			2,128			2,340			1,480			525			12,636
(Gain) loss on disposal of long-lived assets, net	—		6			—			(2		)	—			(166		)	—			(162		)
Total expenses	161,546		163			33,868			37,032			5,299			44,350			393			282,651
Earnings from equity method investments	10,429		6,916			—			—			—			—			—			17,345
Operating income (loss)	20,115		6,753			1,913			1,707			(2,264		)	(1,356		)	(4,478		)	22,390
Other expenses (income), net	3,171		(968		)	4,711			593			756			(471		)	20,070			27,862
Income (loss) from continuing operations before income taxes	$	16,944	$	7,721		$	(2,798	)	$	1,114		$	(3,020	)	$	(885	)	$	(24,548	)	$	(5,472	)
Total assets at March 31, 2013 (excluding intersegment receivables)	$	820,561	$	177,043		$	301,034		$	137,637		$	161,933		$	100,675		$	110,325		$	1,809,208

	Three Months Ended March 31, 2012
	Crude			SemStream			SemCAMS			SemGas		SemLogistics			SemMexico			Corporate and Other			Consolidated
										(dollars in thousands)
Revenues:
External	$	179,715		$	6		$	35,165		$	30,710	$	3,784		$	62,651		$	—		$	312,031
Intersegment	—			—			—			2,730		—			—			(2,730		)	—
Total revenues	179,715			6			35,165			33,440		3,784			62,651			(2,730		)	312,031
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	160,508			34			119			26,549		—			57,041			(2,730		)	241,521
Operating	5,454			(6		)	26,236			2,853		1,454			2,000			—			37,991
General and administrative	2,718			51			4,418			1,843		1,811			2,688			6,301			19,830
Depreciation and amortization	2,967			—			2,573			1,630		2,318			1,561			676			11,725
Total expenses	171,647			79			33,346			32,875		5,583			63,290			4,247			311,067
Earnings from equity method investments	6,571			927			—			—		—			—			—			7,498
Operating income (loss)	14,639			854			1,819			565		(1,799		)	(639		)	(6,977		)	8,462
Other expenses (income), net	(237		)	38			5,203			532		1,279			(110		)	911			7,616
Income (loss) from continuing operations before income taxes	$	14,876		$	816		$	(3,384	)	$	33	$	(3,078	)	$	(529	)	$	(7,888	)	$	846