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Pension and Other Postretirement Benefits (Schedule of Total Expense for All Retirement Plans) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
plan
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Defined Benefit Plan Disclosure [Line Items]      
Total retirement plan expense $ 4,001 $ 3,685 $ 2,824
401(k) plan      
Defined Benefit Plan Disclosure [Line Items]      
Total retirement plan expense 3,580 3,196 2,403
Multiemployer and other defined benefit and pension plans      
Defined Benefit Plan Disclosure [Line Items]      
Total retirement plan expense $ 79 78 70
Number of plans | plan 1    
Other Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total retirement plan expense $ 342 $ 411 $ 351