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Major Customers (Tables)
 12 Months Ended
Dec. 31, 2013
Major Customers And Derivative Counterparties [Abstract]  
Consolidated Oil, NGL And Gas Revenues
The following purchasers individually accounted for ten percent or more of the Company's consolidated oil, NGL and gas revenues, including the revenues from discontinued operations, in at least one of the three years ended December 31, 2013:
 
 
Year Ended December 31,
 
2013
 
2012
 
2011
Plains Marketing LP
26
%
 
25
%
 
16
%
Enterprise Products Partners L.P.
12
%
 
14
%
 
12
%
Occidental Energy Marketing Inc
12
%
 
13
%
 
14
%