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Note 13 - Stock-Based Compensation (Detail) - Weighted Average Assumptions	3 Months Ended
	Mar. 31, 2012
Expected volatility	61.70%
Expected term (in years)	7 years
Risk-free rate	1.50%
Employees [Member]
Forfeiture Rate	25.00%
Officers and Directors [Member]
Forfeiture Rate	0.00%

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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