Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable-Related Parties (Narrative) (Details)

v2.4.0.8
Accounts Receivable-Related Parties (Narrative) (Details) (USD $)
0 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Jul. 02, 2008
Everest Operations Management LLC [Member]
Sep. 30, 2012
Everest Operations Management LLC [Member]
Sep. 30, 2012
Everest Operations Management LLC [Member]
Jul. 01, 2008
Everest Operations Management LLC [Member]
Related Party Transaction [Line Items]            
Accounts receivable-related parties $ 29,797,000 $ 34,848,000        
Percentage of proportionate share of acquisition or divestiture consideration payable to affiliates           1.00%
Required notice period, counterparty     30 days      
Reimbursement for general and administrative expenses performed for related party under acquisition team agreement       $ 400,000 $ 900,000