Note 2 - Significant Accounting Policies - Schedule of Changes in Contract Assets and Liabilities (Details)	3 Months Ended
	Sep. 30, 2022 USD ($)
Balance	$ 757,485
Amounts reclassified to accounts receivable	(98,000)
Other	113
Balance	659,598	[1]
Balance	1,555,143
Amounts billed but not recognized as revenue	1,269,010
Revenue recognized related to the opening balance of deferred revenue	(1,097,112)
Balance	$ 1,727,041

[1] Contract asset balances for June 30, 2022 include a current and a long-term contract asset of $649,433 and $108,052, respectively.