Note 1 - Basis of Presentation, Business and Organization (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.001	$ 0.001
Patents Issued	2
Patents Filed	79
Retained Earnings (Accumulated Deficit) (in Dollars)	$ (70,366,135)	$ (71,313,550)
Cash and Cash Equivalents, at Carrying Value (in Dollars)	$ 15,707,956	$ 13,000,372	$ 5,918,468	$ 7,216,663

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details