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Stock-based Compensation (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Feb. 11, 2021
shares
Feb. 11, 2020
shares
Feb. 12, 2019
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
Plan
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2014
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of plans | Plan       2      
Stock-based compensation, net of awards issued (shares) | shares       419,152      
Number of additional shares authorized (shares) | shares             1,100,000
Stock-based compensation       $ 19,093 $ 7,394 $ 20,879  
Granted (shares) | shares       307,040      
Executive Management [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation       $ 7,300 6,800    
Total Restricted Stock Award [Member] | Restricted Stock Units (RSUs) [Member] | Director Stock Award Program [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for grant (shares) | shares       556,143      
Total Restricted Stock Award [Member] | Restricted Stock Units (RSUs) [Member] | Employee Stock Award Program [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for grant (shares) | shares       731,034      
Performance Share Award Program [Member] | Restricted Stock Units (RSUs) [Member] | Employee Stock Award Program [Member] | Performance Share Award Program 2021 Grant [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Granted (shares) | shares 268,298            
Allocated share-based compensation expense, net of tax       $ 9,400      
Award vesting period       3 years      
Allocated share-based compensation expense       $ 6,600      
Compensation cost not yet recognized, period for recognition       24 months      
Options, outstanding, number (shares) | shares     206,865        
Options, previously forfeited, number (shares) | shares     13,200        
Shares, issued (shares) | shares     37,059        
Stock comp shares surrendered, value     $ 800        
Stock comp shares surrendered, per share price (USD per share) | $ / shares     $ 22.31        
Performance Share Award Program [Member] | Restricted Stock Units (RSUs) [Member] | Employee Stock Award Program [Member] | Performance Share Award Program 2020 Grant [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Granted (shares) | shares   267,506          
Allocated share-based compensation expense, net of tax         $ 14,100    
Award vesting period         3 years    
Allocated share-based compensation expense       $ 3,700 $ 9,500    
Compensation cost not yet recognized, period for recognition         12 months    
Performance Share Award Program [Member] | Restricted Stock Units (RSUs) [Member] | Employee Stock Award Program [Member] | Performance Share Award Program 2019 Grant [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Granted (shares) | shares     220,065        
Allocated share-based compensation expense, net of tax         $ 12,300    
Award vesting period         3 years    
Allocated share-based compensation expense       1,600 $ 1,900 8,800  
Restricted Share Award Program [Member] | Restricted Stock Units (RSUs) [Member] | Director Stock Award Program [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation       $ 1,100 $ 800 $ 800  
Granted (shares) | shares       25,842 87,042 10,885  
Award vesting period       1 year 1 year 1 year  
Compensation cost not yet recognized, period for recognition       3 months      
Compensation cost not yet recognized       $ 200      
Grants, fair value       800 $ 1,100 $ 700  
Restricted Share Award Program [Member] | Restricted Stock Units (RSUs) [Member] | Employee Stock Award Program [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation       $ 6,100 $ 6,400 $ 8,000  
Granted (shares) | shares       83,866 321,084 182,533  
Award vesting period       6 years      
Compensation cost not yet recognized, period for recognition       40 months      
Compensation cost not yet recognized       $ 15,300      
Grants, fair value       2,800 $ 4,800 $ 8,700  
Vested in period, intrinsic value       $ 6,500 $ 7,700 $ 8,700  
Maximum [Member] | Total Restricted Stock Award [Member] | Restricted Stock Units (RSUs) [Member] | Director Stock Award Program [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares authorized (shares) | shares             13,000,000
Number of shares available for grant (shares) | shares       1,400,000