Leases - Income Statement transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Operating leases
Operating lease cost charged to profit and loss	$ 126,954	$ 142,710	$ 414,128	$ 354,695
Finance leases
Interest on lease liabilities	784,804	743,963	2,273,310	2,322,044
Depreciation on right-of-use assets	2,227,380	2,780,940	7,292,809	8,806,088
Total finance lease cost	3,012,184	3,524,903	9,566,119	11,128,132
Less: Lease cost capitalized to unproved properties	(3,012,184)	(3,524,903)	(9,566,119)	(11,128,132)
Finance lease cost charged to profit and loss	$ 0	$ 0	$ 0	$ 0