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Note 1 - Organization and Summary of Significant Accounting Policies (Detail) - Stock Based Compensation - Weighted Average Assumptions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Risk free interest rate	1.75%	0.60%
Expected life of option in years	10 years	10 years
Expected dividend yield rate	0.00%	0.00%
Expected volatility	74.00%	63.00%

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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