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Organization and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of significant concentration risk
Based on the availability of other customers, the Company does not believe the loss of any of these customers would have a significant effect on its business or financial condition.
 
 
Year Ended December 31,
 
 
2014
2013
2012
Shell Trading Co.
 
30
%
35
%
30
%
Laclede Energy
 
24
%
14
%
17
%
Unimark, LLC
 
14
%
14
%
(a)

JP Morgan Ventures Energy
 
(a)

(a)

12
%
 
(a)
Less than 10 percent