SUBSQUENT EVENT
12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]  
SUBSQUENT EVENT
SUBSQUENT EVENT
On March 8, 2014, Summit Investments offered 100% of its interests in Red Rock Gathering Company, LLC ("Red Rock") to the Partnership in exchange for total cash consideration of $305.0 million, subject to customary working capital adjustments (the "Red Rock Drop Down"). The Red Rock Drop Down is expected to close by March 31, 2014. Because of the common control aspects in a drop down transaction, the Red Rock acquisition is expected to be deemed a transaction between entities under common control and, as such, will be accounted for on an “as if pooled” basis for all periods in which common control existed. Upon closing the acquisition of Red Rock, SMLP’s financial results will retrospectively include Red Rock’s financial results for all periods ending after October 23, 2012.