Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business (Details)

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Organization and Description of Business (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 0 Months Ended 6 Months Ended 72 Months Ended
Jun. 27, 2012
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Dec. 31, 2011
Organization and Description of Business (Additional Textual) [Abstract]          
Accumulated deficit   $ (69,585)   $ (69,585) $ (56,574)
Net proceeds from public offering of Common Stock $ 26,500 $ 28,750 $ 80 $ 28,948  
Common Stock [Member]
          
Organization and Description of Business (Textual) [Abstract]          
Public offering of Common Stock, shares 5,750,000