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Note 2 - Significant Accounting Policies (Detail) - Fair Value Assumptions (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Weighted Average fair value (in Dollars per share)	$ 0.45	$ 1.16
Dividend yield	0.00%	0.00%
Expected volatility	74.40%
Risk-free interest	1.04%
Expected life (years)	6 years 3 months	6 years 3 months
Minimum [Member]
Expected volatility		83.20%
Risk-free interest		1.19%
Maximum [Member]
Expected volatility		85.00%
Risk-free interest		2.56%

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 a nonvested share or option award issued to other than an employee.

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