Note 23 - Earnings Per Share (Details Textual) - $ / shares	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding (in shares)	656,375	656,375
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	$ 2.53	$ 2.53
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 7.76	$ 7.76
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	285,500	310,500