Note 19 - Stock Options - Summary of Nonvested Employee Stock (Details) - Employee Stock Option Plan 2017 [Member] - $ / shares	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Non-vested options outstanding, beginning (in shares)	102,250	98,000
Non-vested, weighted average grant date fair value (in dollars per share)	$ 2.29	$ 3.39
Granted (in shares)	40,500	71,000
Vested (in shares)	(46,875)	(51,750)
Non-vested options outstanding, beginning (in shares)	95,875	117,250
Non-vested, weighted average grant date fair value (in dollars per share)	$ 5.23	$ 3.90