Annual report pursuant to Section 13 and 15(d)

Stock Plans and Stock-Based Compensation (Details 1)

v2.4.0.6
Stock Plans and Stock-Based Compensation (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 78 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Components of stock-based compensation        
Total stock-based compensation expense $ 3,638 $ 1,469 $ 2,329 $ 7,512
Employee awards [Member]
       
Components of stock-based compensation        
Total stock-based compensation expense 2,408 520 215 3,206
Non-employee awards [Member]
       
Components of stock-based compensation        
Total stock-based compensation expense 664 662 2,114 3,413
Non-employee warrants [Member]
       
Components of stock-based compensation        
Total stock-based compensation expense $ 566 $ 287   $ 893