Note 19 - Stock Options - Summary of Nonvested Employee Stock (Details) - Employee Stock Option Plan 2017 [Member] - $ / shares	9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Non-vested options outstanding (in shares)	75,875	102,250
Non-vested, weighted average grant date fair value (in dollars per share)	$ 5.98	$ 2.29
Granted (in shares)	65,000
Granted, weighted average grant date fair value (in dollars per share)	$ 4.77
Vested (in shares)	(49,125)	(46,875)
Forfeited (in shares)	(10,000)
Non-vested options outstanding (in shares)	81,750	95,875
Non-vested, weighted average grant date fair value (in dollars per share)	$ 5.53	$ 2.29