Note 3 - Equity - Preferred Stock Redemption (Details) - USD ($)			3 Months Ended			6 Months Ended
		Dec. 31, 2023	Dec. 31, 2023	Sep. 30, 2023	[1],[2]	Dec. 31, 2023	Aug. 29, 2023
Total number of shares redeemed (in shares)		70,093				70,093
Price paid per share (in dollars per share)							$ 10.7
Dollars Expended by Period under the Preferred Redemption		$ 749,995	$ 749,995			$ 749,995
Remaining Amount Available for Future Preferred Redemption		$ 8,214,219	$ 8,214,219			$ 8,214,219	$ 8,964,214
Series B and Series B-1 Preferred Stock [Member]
Total number of shares redeemed (in shares)			70,093	0
Price paid per share (in dollars per share)		$ 10.7	$ 10.7	$ 10.7		$ 10.7
Dollars Expended by Period under the Preferred Redemption		$ 749,995	$ 749,995	$ 0		$ 749,995
Remaining Amount Available for Future Preferred Redemption		$ 8,214,219	$ 8,214,219	$ 8,964,214		$ 8,214,219
Series B Preferred Stock [Member]
Price paid per share (in dollars per share)	[1]	$ 10.7	$ 10.7			$ 10.7
Remaining Amount Available for Future Preferred Redemption	[1]	$ 6,691,513	$ 6,691,513			$ 6,691,513

[1] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.

[2] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.