Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Awards (Stock-Based Compensation Expense) (Details)

v3.5.0.2
Stock-Based Awards (Stock-Based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation expense before income taxes $ 5,084 $ 4,768 $ 10,460 $ 9,424
Income tax benefit (1,765) (1,707) (3,641) (3,358)
Stock-based compensation expense after income taxes 3,319 3,061 6,819 6,066
Selling and marketing        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based compensation expense 1,702 1,598 3,510 3,152
General and administrative        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based compensation expense $ 3,382 $ 3,170 $ 6,950 $ 6,272