Annual report pursuant to Section 13 and 15(d)

Note 10 - Share-based Compensation and Other Benefit Plans - Assumptions Used in Black-Scholes Option-Pricing Model (Details)

v3.19.2
Note 10 - Share-based Compensation and Other Benefit Plans - Assumptions Used in Black-Scholes Option-Pricing Model (Details)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Dividend yield 0.74% 1.10% 1.20%
Expected lives (years) (Year) 4 years 36 days 4 years 255 days 4 years 255 days
Minimum [Member]      
Expected volatility 20.00% 20.00% 21.00%
Risk-free interest rates 2.50% 1.70% 1.00%
Maximum [Member]      
Expected volatility 23.00% 21.00% 24.00%
Risk-free interest rates 3.00% 2.80% 1.90%