Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Schedule Of Share-Based Payment Arrangements (Details)

v3.19.1
Stock-Based Compensation Schedule Of Share-Based Payment Arrangements (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost $ 1,082 $ 1,190 $ 1,421
Cost of revenues      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost 34 39 49
Operating expenses      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost 1,048 1,151 1,372
Restricted stock and restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost 566 765 867
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost 326 366 554
Performance shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation cost $ 190 $ 59 $ 0