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Equity and Long-Term 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]      
Share-based compensation expense $ 47,925 $ 52,908 $ 64,133
Total unrecognized share-based compensation costs $ 32,800    
Weighted-average remaining period 1 year 9 months 25 days    
Excess tax deficiencies (benefits) $ (4,600) 8,400 $ (100)
Expense related to long-term incentive awards outstanding $ 22,500 $ 13,900  
Maximum | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Minimum | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
2016 Employee Stock Plan | Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
2016 Employee Stock Plan | Maximum | Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 200.00%    
2016 Employee Stock Plan | Minimum | Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 0.00%    
2011 Non-Employee Director Plan | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 100.00%    
Long-Term Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Class A  Common Stock | 2016 Employee Stock Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized for grant 12,000,000    
Number of share awards available for future grant 8,176,572    
Class A  Common Stock | 2016 Employee Stock Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Class A  Common Stock | 2011 Non-Employee Director Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized for grant 665,000    
Number of share awards available for future grant 236,894    
Class A  Common Stock | 2011 Non-Employee Director Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years