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Related Party Transactions (Details) (NGL Energy [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
NGL Energy [Member]
       
Related Party Transaction        
Revenues $ 31,043 $ 14,395 $ 66,367 $ 41,945
Related Party Transaction, Purchases from Related Party 8,018 6,009 8,018 36,573
Reimbursements from NGL Energy for transition services $ 60 $ 28 $ 156 $ 526