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Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Estimated future benefit payments expected to be paid in 2021 $ 32,900    
Estimated future benefit payments expected to be paid in 2022 33,400    
Estimated future benefit payments expected to be paid in 2023 34,000    
Estimated future benefit payments expected to be paid in 2024 34,600    
Estimated future benefit payments expected to be paid in 2025 34,900    
Total estimated future benefit payments expected to be paid for the five years ending 2030 $ 177,100    
Target plan asset allocations range 100.00%    
Fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Target plan asset allocations range 50.00%    
Equity and other return-seeking assets      
Defined Benefit Plan Disclosure [Line Items]      
Target plan asset allocations range 50.00%    
Defined benefit plans      
Defined Benefit Plan Disclosure [Line Items]      
Current year actuarial gain (loss) $ 27,318 $ (5,296) $ (5,478)
Expected contributions to benefit plans 25,000    
SERPs      
Defined Benefit Plan Disclosure [Line Items]      
Amortization of actuarial loss (300) (300) (200)
Current year actuarial gain (loss) (300) $ 1,000 $ 1,900
Expected contributions to benefit plans $ 1,400