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Equity Incentive Awards - Narratives (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award          
Fair value of shares issued   $ 3,300      
Options issued (in shares) 16,185   16,185 16,090  
Options issued (in usd per share) $ 68.74   $ 68.74 $ 66.81  
Compensation expense related to incentive plans     $ 10,900 $ 11,500 $ 10,500
Options forfeited (in shares)     0 0 0
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award          
Vesting period (in years)     3 years 6 months    
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award          
Share based compensation expense to be recognized     $ 11,600    
Period for recognition of cost not recognized (in years)     1 year 9 months 18 days    
2014 Awards          
Share-based Compensation Arrangement by Share-based Payment Award          
Options available for grant (in shares)     5,350,503    
2014 Awards | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award          
Contractual term (in years)     10 years    
Shares issued (shares) 58,192 104,734      
Shares categorized as vesting (in percentage)   50.00%      
Vesting period (in years)   3 years      
Fair value of shares issued $ 4,000        
Shares categorized as performance based (in percentage)   50.00%      
2014 Awards | Restricted Stock | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award          
Vesting period (in years)   3 years 6 months      
2014 Awards | Restricted Stock | Tranche One          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting rights (in percentage)     33.33%    
2014 Awards | Restricted Stock | Tranche Two          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting rights (in percentage)     33.33%    
2014 Awards | Restricted Stock | Tranche Three          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting rights (in percentage)     33.33%    
2014 Awards | Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award          
Shares issued (shares)   17,454      
Fair value of shares issued   $ 1,100