Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Deficit) (Details 4)

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Stockholders' Equity (Deficit) (Details 4) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Notes to Financial Statements    
Stock options granted $ 0.17 $ 0.54
Stock options vested $ 0.61 $ 0.45
Stock options canceled/forfeited/expired $ 0.47 $ 0.26