Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.8.0.1
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Stock-Based Compensation        
Stock-based compensation $ 1,499 $ 1,736 $ 4,376 $ 4,582
Operating expense        
Stock-Based Compensation        
Stock-based compensation 3 4 5 2
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation 1,429 1,596 4,032 4,363
Research and development        
Stock-Based Compensation        
Stock-based compensation $ 67 $ 136 $ 339 $ 217