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Note 10 - Equity Compensation (Detail) - Weighted Average Assumptions Used to Develop the Fair Value of Stock Options	3 Months Ended	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Dividend yield	3.11%	3.60%	3.07%
Expected volatility	55.00%	51.00%	55.00%
Risk-free interest rate	1.02%	0.64%	1.00%
Expected life (yrs.)	4 years 255 days	4 years 255 days	4 years 255 days

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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