Note 9 - Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($)	Dec. 31, 2022	Jun. 30, 2022
Accounts payable	$ 1,387,943	$ 2,001,978
Taxes payable	273,282	196,473
Accrued payroll, vacation and bonus payable	405,561	331,644
Accrued operating expenses	653,564	275,695
Total	$ 2,720,350	$ 2,805,790	[1]

[1] Derived from audited financial statements