Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.10.0.1
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Stock-Based Compensation        
Stock-based compensation $ 1,397 $ 1,499 $ 4,198 $ 4,376
Operating expense        
Stock-Based Compensation        
Stock-based compensation   3 1 5
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation 1,382 1,429 4,156 4,032
Research and development        
Stock-Based Compensation        
Stock-based compensation $ 15 $ 67 $ 41 $ 339