Rose Rock Midstream, L.P. (Details 2) (USD $)	3 Months Ended
	Sep. 30, 2012		Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Distributions Paid
Distribution per unit	$ 0.3925000	[1]	$ 0.3825	$ 0.3725	$ 0.0670	[2]
General partner distributions	$ 134,000		$ 131,000	$ 128,000	$ 23,000
Incentive distributions	0		0	0	0
Total distributions paid	6,720,000		6,549,000	6,377,000	1,147,000
Distributions Declared
Record Date	Nov. 05, 2012		Aug. 06, 2012	May 07, 2012	Feb. 03, 2012
Distribution Date	Nov. 14, 2012	[1]	Aug. 14, 2012	May 15, 2012	Feb. 13, 2012
SemGroup [Member] | Common Units [Member]
Distributions Paid
Limited partner distributions	545,000		532,000	517,000	93,000
SemGroup [Member] | Subordinated Units [Member]
Distributions Paid
Limited partner distributions	3,293,000		3,209,000	3,125,000	561,000
Noncontrolling Interests [Member]
Distributions Paid
Limited partner distributions	$ 2,748,000		$ 2,678,000	$ 2,607,000	$ 470,000

[1] **Expected payment date and amounts for distributions related to the quarter ended September 30, 2012.

[2] *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.