Note 20 - Stock Options - Summary of Nonvested Employee Stock (Details) - Employee Stock Option Plan 2017 [Member] - $ / shares	6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Non-vested options outstanding (in shares)	81,750	75,875
Non-vested, weighted average grant date fair value (in dollars per share)	$ 5.53	$ 5.98
Granted (in shares)	48,000	25,000
Granted, weighted average grant date fair value (in dollars per share)	$ 4.88	$ 5.18
Vested (in shares)	(21,000)	(9,000)
Non-vested options outstanding (in shares)	108,750	81,875
Forfeited (in shares)		(10,000)
Non-vested, weighted average grant date fair value (in dollars per share)	$ 5.38	$ 5.79
Forfeited, weighted average grant date fair value (in dollars per share)		$ 0