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Balance Sheets (Parenthetical) (USD $)
Sep. 30, 2011
Dec. 31, 2010
Common stock, par value$ 0.01$ 0.01
Common stock, shares authorized100,000,000100,000,000
Common stock, shares issued7,972,9747,822,314
Common stock, shares outstanding7,972,9747,822,314
Redeemable Convertible Preferred Stock
  
Redeemable convertible preferred stock, par value$ 0.01$ 0.01
Redeemable convertible preferred stock, shares authorized1,000,0001,000,000
Redeemable convertible preferred stock, shares issued168168
Redeemable convertible preferred stock, shares outstanding168168
Redeemable convertible preferred stock, liquidation value$ 168,496$ 168,496