XML 52 R58.htm IDEA: XBRL DOCUMENT v3.19.3
Stock-Based Plans - Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total Share-based Compensation $ 3,029 $ 2,303 $ 8,292 $ 6,057
Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total Share-based Compensation 291 118 561 358
Options and Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total Share-based Compensation $ 2,738 $ 2,185 $ 7,731 $ 5,699