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Property and Equipment (Tables)
 6 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Schedule of oil and natural gas properties and other property and equipment
As of December 31, 2018 and June 30, 2018, our oil and natural gas properties and other property and equipment consisted of the following:
 
December 31,
2018
 
June 30,
2018
Oil and natural gas properties
 

 
 

Property costs subject to amortization
$
94,378,924

 
$
90,392,918

Less: Accumulated depreciation, depletion, and amortization
(32,241,235
)
 
(29,153,172
)
Unproved properties not subject to amortization
—

 
—

Oil and natural gas properties, net
$
62,137,689

 
$
61,239,746

Other property and equipment
 

 
 

Furniture, fixtures, office equipment and other, at cost
$
145,289

 
$
143,223

Less: Accumulated depreciation
(121,102
)
 
(112,816
)
Other property and equipment, net
$
24,187

 
$
30,407