Quarterly report pursuant to sections 13 or 15(d)

Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Detail) - Anti-dilutive Securities

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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Detail) - Anti-dilutive Securities
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Antidilutive securities 20,298,130 11,942,830
Stock Options [Member]
   
Antidilutive securities 6,442,127 3,503,811
Warrant [Member]
   
Antidilutive securities 13,313,678 4,776,982
Convertible Debt Securities [Member]
   
Antidilutive securities 542,325 3,662,037