Rose Rock Midstream, L.P. (Tables)

12 Months Ended

Dec. 31, 2012

Investments in and Advances to Affiliates, Schedule of Investments [Abstract]

Quarterly Target Distributions

Rose Rock’s partnership agreement requires Rose Rock to distribute all of its available cash each quarter in the following manner:

	Total Quarterly Distributions Per Unit Target Amount						Marginal Percentage Interest in Distributions
							Unitholders		General Partner		Incentive Distribution Rights
Minimum Quarterly Distributions					$	0.362500	98.0	%	2.0	%	—
First Target Distribution	above	$	0.362500	up to	$	0.416875	98.0	%	2.0	%	—
Second Target Distribution	above	$	0.416875	up to	$	0.453125	85.0	%	2.0	%	13.0	%
Third Target Distribution	above	$	0.453125	up to	$	0.543750	75.0	%	2.0	%	23.0	%
Thereafter				above	$	0.543750	50.0	%	2.0	%	48.0	%

Distributions Paid and declared

The following table shows the distributions paid (in thousands, except for per unit amounts):

		Record Date	Payment Date	Distribution Per Unit			Distributions Paid
Quarter Ended							SemGroup								Noncontrolling Interest Common Units		Total Distributions
							General Partner		Incentive Distri-butions		Common Units		Subord-inated Units
December 31, 2011	*	February 3, 2012	February 13, 2012	$	0.0670	*	$	23	$	—	$	93	$	561	$	470	$	1,147
March 31, 2012		May 7, 2012	May 15, 2012	$	0.3725		$	128	$	—	$	517	$	3,125	$	2,607	$	6,377
June 30, 2012		August 6, 2012	August 14, 2012	$	0.3825		$	131	$	—	$	532	$	3,209	$	2,678	$	6,550
September 30, 2012		November 5, 2012	November 14, 2012	$	0.3925		$	134	$	—	$	545	$	3,294	$	2,748	$	6,721
December 31, 2012		February 4, 2013	February 14, 2013	$	0.4025		$	167	$	—	$	1,164	$	3,377	$	3,623	$	8,331

*Minimum quarterly distribution for quarter ended December 31, 2011 was prorated for the period beginning immediately after the closing of Rose Rock’s IPO, December 14, 2011 through December 31, 2011.

Summarized Balance Sheet Information

Certain summarized balance sheet information of Rose Rock is shown below (in thousands):

	December 31, 2012		December 31, 2011
Cash	$	108	$	9,709
Other current assets	250,509		156,873
Property, plant and equipment	291,530		276,246
Other noncurrent assets	2,579		2,666
Total assets	$	544,726	$	445,494
Current liabilities	$	231,843	$	140,553
Long-term debt	4,562		87
Partners’ capital attributable to SemGroup	179,187		177,323
Partners’ capital attributable to noncontrolling interests	129,134		127,531
Total liabilities and partners’ capital	$	544,726	$	445,494

Summarized Income Statement Information

Certain summarized income statement information of Rose Rock for the years endedDecember 31, 2012, 2011, and 2010 is shown below (in thousands):

	Year Ended December 31, 2012		Year Ended December 31, 2011		Year Ended December 31, 2010
Revenue	$	620,417	$	431,321	$	208,081
Costs of products sold	$	546,966	$	366,265	$	146,614
Operating, general and administrative expenses	$	35,385	$	28,816	$	28,058
Depreciation and amortization expense	$	12,131	$	11,379	$	10,435
Net income	$	23,954	$	23,235	$	23,477