Note 3. Stock-based Compensation: Schedule of Fair Values Assumptions (Details) (USD $)	9 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Details
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	69.38%	69.08%
Risk-free interest rate	1.74%	2.09%
Expected life of options (years)	10	10
Weighted average fair value of options granted	$ 2.03	$ 3.10

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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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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