Statements of Operations and Comprehensive Loss (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended 9 Months Ended 18 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2012
Operating expenses:          
Research and development $ 1,595 $ 404 $ 404 $ 3,892 $ 5,062
General and administrative 1,525 370 780 5,428 6,882
Total operating expenses 3,120 774 1,184 9,320 11,944
Loss from operations (3,120) (774) (1,184) (9,320) (11,944)
Interest income 2     2 2
Net loss (3,118) (774) (1,184) (9,318) (11,942)
Accretion of convertible preferred stock to redemption value   101 101   101
Net loss applicable to common stockholders (3,118) (875) (1,285) (9,318) (12,043)
Net loss per share applicable to common stockholders-basic and diluted (in dollars per share) $ (0.42) $ (0.89) $ (1.69) $ (2.69) $ (5.47)
Weighted average number of common shares used in net loss per share applicable to common stockholders-basic and diluted (in shares) 7,438 979 759 3,460 2,202
Comprehensive loss $ (3,118) $ (774) $ (1,184) $ (9,318) $ (11,942)