Note 3 - Fair Value Measurements (Detail) - Summary of Accrued Warrant Liability (USD $)	12 Months Ended
Dec. 31, 2012
Fair Value (in Dollars)	$ 4,105,659
Valuation Technique	Black-Scholes pricing model
Unobservable Input	1 year 32 days
Maximum	1 year 32 days

- Definition

For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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