Note 2 - Significant Accounting Policies - Schedule of Changes in Contract Assets and Liabilities (Details)	9 Months Ended
	Mar. 31, 2023 USD ($)
Balance – June 30, 2022	$ 757,485
Balance – June 30, 2022	1,555,143
Amounts billed but not recognized as revenue	1,559,549
Amounts reclassified to accounts receivable	(344,000)
Revenue recognized related to the opening balance of deferred revenue	1,551,918
Other	(19,959)
Balance – March 31, 2023	1,562,774
Balance – March 31, 2023	$ 393,526