Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details 1)

v2.4.0.6
Stock Based Compensation (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Stock-Based compensation expense        
Stock-based compensation expense $ 744 $ 202 $ 1,143 $ 452
Research and development [Member]
       
Stock-Based compensation expense        
Stock-based compensation expense 370 88 611 188
General and administrative [Member]
       
Stock-Based compensation expense        
Stock-based compensation expense $ 374 $ 114 $ 532 $ 264