Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

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Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Stock-Based Compensation        
Stock-based compensation $ 1,451 $ 190 $ 4,782 $ 735
Operating expense        
Stock-Based Compensation        
Stock-based compensation (12)   4 10
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation 1,292 126 4,534 494
Research and development        
Stock-Based Compensation        
Stock-based compensation $ 171 $ 64 $ 244 $ 231