CONDENSED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended 121 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Operating expenses:              
General and administrative $ 1,035 $ 649 $ 2,553 $ 2,072 $ 3,662 $ 3,953 $ 15,765
Research and development 760 686 2,788 2,268 2,733 2,922 16,712
Research and development grant received         0 0 (489)
Total operating expenses 1,795 1,335 5,341 4,340 6,395 6,875 31,988
Loss from operations (1,795) (1,335) (5,341) (4,340) (6,395) (6,875) (31,988)
Other income (expense):              
Financing cost         0 0 (519)
(Loss) gain on change in fair value of warrant derivative liability 0 330 0 1,096 1,096 (50) 86
Interest (expense) income, net 2 0 3 (2) (3) 5 36
Loss before provision for income taxes (1,793) (1,005) (5,338) (3,246) (5,302) (6,920) (32,385)
Provision for income taxes 0 0 0 0 0 0 0
Net loss $ (1,793) $ (1,005) $ (5,338) $ (3,246) $ (5,302) $ (6,920) $ (32,385)
Net loss per common share, basic and diluted (in dollars per share) $ (0.05) $ (0.04) $ (0.18) $ (0.14) $ (0.21) $ (0.32)  
Weighted average shares outstanding (in shares) 32,693,788 25,364,457 29,589,182 23,995,394 24,816,481 21,805,211