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Employee Benefit Plans - Narrative (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 02, 2018
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
calendar_year
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]            
Employer matching contribution percentage     6.00%      
Amortization of unrecognized net actuarial loss     $ (686) $ (814) $ (21)  
401(k) Plan            
Defined Benefit Plan Disclosure [Line Items]            
Deferral rate     5.00%      
Percent of annual salary employees may contribute     15.00%      
Percent matched by company up to 6 percent of employee salary 100.00%          
Matching contributions     $ 4,300 4,200 3,600  
Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Percentage of Final Average Annual Compensation (five highest consecutive calendar year's earnings out of the last ten years of employment)           0.75%
Number of highest consecutive calendar years of earnings | calendar_year     5      
Percentage of Final Average Annual Compensation in excess of average social security wage base     0.65%      
Years of service used for Final Average Annual Compensation in excess of average social security wage base calculation     35 years      
Vesting period     5 years      
Accumulated benefit obligation     $ 44,750 41,592 36,354  
Amortization of unrecognized net actuarial loss     $ (843) (977)    
SERP            
Defined Benefit Plan Disclosure [Line Items]            
Number of highest consecutive calendar years of earnings | calendar_year     5      
Accumulated benefit obligation     $ 5,982 5,638 $ 5,794  
Amortization of unrecognized net actuarial loss     $ 157 $ 163    
Lifetime monthly pension benefits, percent     3.00%      
Maximum percent of final average compensation     60.00%      
Percent of participant's primary social security benefit     50.00%      
Forecast | Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Amortization of unrecognized net actuarial loss   $ 590        
Forecast | SERP            
Defined Benefit Plan Disclosure [Line Items]            
Amortization of unrecognized net actuarial loss   $ 15        
Maximum | Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Years of service used for Final Average Annual Compensation calculation     40 years      
Maximum | SERP            
Defined Benefit Plan Disclosure [Line Items]            
Maximum years of service     20 years