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Note 7 - Stock Based Compensation (Detail) - Stock Options Valuation Assumptions	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Expected option life in years		4 years
Expected dividend yield	0.00%	0.00%	0.00%
Minimum [Member]
Risk-free interest rates	0.31%	1.10%	1.70%
Expected option life in years	3 years		2 years
Expected stock price volatility	34.00%	46.00%	45.00%
Maximum [Member]
Risk-free interest rates	0.61%	1.70%	2.40%
Expected option life in years	4 years		4 years
Expected stock price volatility	50.00%	54.00%	66.00%

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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