Quarterly report pursuant to Section 13 or 15(d)

Stock Plans (Details)

v2.4.0.8
Stock Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total stock-based compensation expenses $ 71 $ 21 $ 457 $ 656
Research and Development Expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total stock-based compensation expenses 33 11 206 367
General and Administrative Expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total stock-based compensation expenses $ 38 $ 10 $ 251 $ 289