Note 9 - Warrants (Detail) - Warrants - Fair Value Weighted Average Assumptions (USD $)	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Stock Price (in Dollars per share)	$ 0.52	$ 0.86
Exercise Price (in Dollars per share)	$ 2.56	$ 2.56
Expected Volatility	110.00%	96.00%
Expected Term (in years)	4 years 109 days	5 years 109 days
Risk-free Interest Rate	0.39%	1.84%

Exercise price of the warrants.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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