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Related Party Transactions
 9 Months Ended
Sep. 30, 2013
Related Party Transactions [Abstract]  
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS
NGL Energy
As described in Note 3, we own interests in NGL Energy, which we account for under the equity method.
During the three and nine months ended September 30, 2013 and 2012, we generated the following transactions with NGL Energy (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2013
 
2012
 
2013
 
2012
Revenues
$
31,043

 
$
14,395

 
$
66,367

 
$
41,945

Purchases
$
8,018

 
$
6,009

 
$
8,018

 
$
36,573

Reimbursements from NGL Energy for transition services
$
60

 
$
28

 
$
156

 
$
526


High Sierra Crude Oil and Marketing, LLC
We generated revenues from High Sierra Crude Oil and Marketing, LLC ("High Sierra"), which is a subsidiary of NGL Energy, of $15.7 million and $12.4 million for the three months ended September 30, 2013 and 2012, respectively. We generated revenues from High Sierra of $68.6 million and $23.4 million for the nine months ended September 30, 2013 and 2012, respectively. Purchases from High Sierra were $6.5 million and $16.3 million for the three months ended September 30, 2013 and 2012, respectively. Purchases from High Sierra were $34.7 million and $32.2 million for the nine months ended September 30, 2013 and 2012, respectively. Transactions with High Sierra primarily relate to transportation and marketing of crude oil and condensate. In accordance with ASC 845-10-15, these transactions were reported as revenue on a net basis in our condensed consolidated statements of operations and comprehensive income as the purchases of inventory and subsequent sales of the inventory were with the same counterparty.
White Cliffs
As described in Note 3, we account for our ownership interest in White Cliffs under the equity method. During the three months ended September 30, 2013 and 2012, we generated storage revenue from White Cliffs of approximately $0.8 million and $0.6 million, respectively. We generated storage revenue from White Cliffs of approximately $2.1 million and $1.8 million during the nine months ended September 30, 2013 and 2012, respectively.
Glass Mountain
As described in Note 3, in May 2012, we formed a joint venture, Glass Mountain, to construct, maintain and operate a 210-mile crude oil pipeline system originating in Alva and Arnett, Oklahoma and terminating at Cushing, OK. In connection with the pipeline project, Glass Mountain entered into a Pipeline Construction Management Agreement with Glass Mountain Holding, LLC ("GMH"), a wholly-owned subsidiary of SemGroup. The Pipeline Construction Management Agreement appoints GMH as construction manager of the pipeline project for which GMH will receive $0.9 million prorated over the period of construction. For the three months and the nine months ended September 30, 2013, Glass Mountain paid $0.1 million and $0.4 million to GMH pursuant to this agreement, the remaining balance of $0.1 million will be received by GMH over the period of construction.
Legal services
The law firm of Conner & Winters, LLP, of which Mark D. Berman is a partner, performs legal services for us. Mr. Berman is the spouse of Candice L. Cheeseman, General Counsel and Secretary. Mr. Berman does not perform any legal services for us. SemGroup paid $0.6 million and $0.5 million in legal fees and related expenses to this law firm during the three months ended September 30, 2013 and 2012, respectively (of which $68.0 thousand and $9.9 thousand was paid by White Cliffs during the three months ended September 30, 2013 and 2012, respectively). SemGroup paid $1.6 million and $1.2 million in legal fees and related expenses to this law firm during the nine months ended September 30, 2013 and 2012, respectively (of which $79.6 thousand and $56.1 thousand was paid by White Cliffs during the nine months ended September 30, 2013 and 2012, respectively).