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5. Property and Equipment (Details-Depreciation) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Property and equipment:        
Depletion of costs for evaluated oil and gas properties $ 1,778,580 $ 2,275,703 $ 7,346,356 $ 5,994,180
Depreciation and amortization of other property and equipment 4,010 8,214 12,286 24,327
Total depreciation, amortization and depletion     7,358,642 6,018,507
Impairment of oil and gas $ 30,995,000 $ 0 $ 52,634,000 $ 0