Note 9 - Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($)	Mar. 31, 2022	Jun. 30, 2021
Accounts payable	$ 2,030,984	$ 1,672,647
Accrued interest	147,822	129,596
Taxes payable	360,821	238,020
Accrued payroll, vacation and bonus payable	266,906	1,049,359
Accrued expenses	67,753	773,252
Total	$ 2,874,286	$ 3,862,874	[1]

[1] Derived from audited financial statements