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Note 19 - Earnings Per Share (Details Textual) - $ / shares
3 Months Ended 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding (in shares) 819,250 741,750 819,250 741,750
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)     $ 3.73 $ 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) 140,706 140,500 140,706 140,500