Organization and Summary of Significant Accounting Policies - Oil and Natural Gas Properties (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Impairment losses	$ 0	$ 867,048
Property, Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Property, Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years