Property and Equipment (Details Textual)	12 Months Ended
	Dec. 31, 2018 USD ($) USD_Bbl	Dec. 31, 2017 USD ($) USD_Bbl
Property and Equipment (Textual)
Proved property		$ 52,000
Capitalized overhead	$ 337,000	66,000
Depletion expense related to oil and gas properties	$ 7,300,000	$ 2,200,000
Depletion expense related to oil and gas properties (in dollars per Mcfe) | USD_Bbl	0.89	0.40
Depreciation and amortization expense	$ 8,108,000	$ 2,544,000
Unproved properties not subject to depletion [Member]
Property and Equipment (Textual)
Depletion expense related to oil and gas properties	5,400,000	1,900,000
Furniture and fixtures [Member]
Property and Equipment (Textual)
Depreciation and amortization expense	$ 803,000	$ 387,000