Note 2 - Significant Accounting Policies - Schedule of Changes in Contract Assets and Liabilities (Details) - USD ($)		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2023		Jun. 30, 2022
Balance – June 30, 2022	$ 757,485	$ 295,011	[1]	$ 757,485
Balance – June 30, 2022		1,555,143
Revenue recognized during the period but not billed	10,000
Amounts billed but not recognized as revenue				1,903,001
Amounts reclassified to accounts receivable		(442,001)
Revenue recognized related to the opening balance of deferred revenue				(1,555,143)
Other		(30,473)
Balance – June 30, 2023	$ 1,555,143	$ 1,903,001		$ 1,555,143

[1] Contract asset balances for June 30, 2023 include a current and a long-term contract asset of $186,959 and $108,052, respectively.