Note 17 - Share-based Compensation - Stock Options, Valuation Assumptions (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Grant date fair value ($) (in dollars per share) | $ 23.45 | ||
| Independent Directors [Member] | |||
| Volatility | 31.30% | 31.50% | 36.80% |
| Risk-free rate of return | 2.80% | 1.76% | 1.03% |
| Dividend yield | 3.24% | 2.47% | 1.96% |
| Expected average life (years) (Year) | 5 years | 4 years 219 days | 5 years |
| Grant date fair value ($) (in dollars per share) | $ 5.30 | $ 6.93 | $ 8.30 |
| Fair value as a % of exercise price | 22.60% | 22.50% | 23.90% |
| X | ||||||||||
- Definition The Fair Value as a percent of exercise price for share based payment awards. No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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