Organization and Summary of Significant Accounting Policies Basis of Presentation Revenues (Details) (Oil and Gas Revenue [Member], Customer Concentration Risk [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shell Trading Co [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)	35.00%	30.00%	18.00%
Laclede Energy [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)	14.00%	17.00%	20.00%
Unimark, LLC [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)	14.00%
JP Morgan Ventures Energy [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)		12.00%
Texon LP [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)			15.00%
Gary Williams [Member]
Concentration Risk [Line Items]
Net oil and gas revenues (percent)			11.00%