Note 9 - Equity Compensation - Weighted Average Assumptions Used to Develop the Fair Value of Stock Options (Details) - $ / shares	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Dividend yield	4.70%	4.60%
Expected volatility	43.00%	42.00%
Risk-free interest rate	1.40%	2.80%
Expected life (Year)	6 years	4 years 328 days
Fair value per share (in dollars per share)	$ 1.22	$ 1.48

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.

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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.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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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.

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-Publisher FASB
-Name Accounting Standards Codification
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