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 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Stock-Based Compensation        
Stock-based compensation $ 1,976 $ 89 $ 3,331 $ 545
Operating expense        
Stock-Based Compensation        
Stock-based compensation 16 (22) 16 10
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation 1,911 36 3,242 368
Research and development        
Stock-Based Compensation        
Stock-based compensation $ 49 $ 75 $ 73 $ 167