Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Summary Of Stock-Based Compensation Expense) (Details)

v3.4.0.3
Stock-Based Compensation (Summary Of Stock-Based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 3,073 $ 2,946
Employee Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense 972 916
Restricted Stock Units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 2,101 $ 2,030