Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details)

v3.2.0.727
Stock Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense $ 401 $ 274 $ 734 $ 548
Research and Development Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense 86 55 288 108
General and Administrative Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense $ 315 $ 219 $ 446 $ 440