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Property and Equipment (Details) - USD ($)	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Oil and natural gas properties
Property costs subject to amortization	$ 93,107,547		$ 90,392,918
Less: Accumulated depreciation, depletion, and amortization	(30,669,914)		(29,153,172)
Unproved properties not subject to amortization	0		0
Oil and natural gas properties, net	62,437,633		61,239,746
Other property and equipment
Furniture, fixtures, office equipment and other, at cost	143,223		143,223
Less: Accumulated depreciation	(116,959)		(112,816)
Other property and equipment, net	26,264		$ 30,407
Delhi field
Other property and equipment
Capital expenditures	$ 2,700,000	$ 600,000

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- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

+ References

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-Publisher FASB
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- Definition

The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs.

+ References

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Depletion of oil and gas property carried under the full cost method.

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Oil and gas properties, gross, carried under the full cost method.

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Oil and gas properties, net of depletion, carried under the full cost method.

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Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

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