Annual report pursuant to Section 13 and 15(d)

Note 17 - Share-based Compensation - Stock Options, Valuation Assumptions (Details)

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Note 17 - Share-based Compensation - Stock Options, Valuation Assumptions (Details) - Share-Based Payment Arrangement, Nonemployee [Member] - $ / shares
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Volatility 41.60% 39.30% 38.20%
Risk-free rate of return 2.92% 0.73% 0.35%
Dividend yield 4.25% 3.79% 3.26%
Expected average life (years) (Year) 4 years 10 months 24 days 5 years 6 months 5 years 6 months
Grant date fair value (in dollars per share) $ 5.98 $ 5.04 $ 3.20
Fair value as a % of exercise price 23.90% 21.30% 24.70%