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Stock-Based Incentive Plans (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for grant (in shares) 3,098,419    
Stock-based compensation expense $ 40,564 $ 35,089 $ 32,553
Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 40,564 35,089 32,553
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 2 years    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 4 years    
Employee stock purchase plan | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 1,505 1,224 1,273
Market performance-based restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 3 years    
Market performance-based restricted stock units | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 3,522 3,200 2,900
Operating performance-based restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 3 years    
Operating performance-based restricted stock units | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 3,434 $ (370) $ 3,918