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Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Contributions, Vesting Period 4 years    
Defined Contribution Plan, Cost $ 1,310 $ 1,135  
Defined Benefit Plan, Benefit Obligation 5,747 7,622 $ 8,065
Defined Benefit Plan, Net Periodic Benefit Cost (173) (171)  
Defined Benefit Plan, Benefits Paid 476 $ 523  
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 479    
Defined Benefit Plan, Expected Future Benefit Payments, Year Five 439    
Defined Benefit Plan, Expected Future Benefit Payments, Year Four 449    
Defined Benefit Plan, Expected Future Benefit Payments, Year Three 446    
Defined Benefit Plan, Expected Future Benefit Payments, Year Two 463    
Defined Benefit Plan, Expected Future Benefit Payment $ 2,081    
Projected Benefit Obligation, Projected Discount Rate 5.44% 2.93%  
Change in Projected Benefit Obligation from Change in Projected Discount Rate $ 1,600    
Defined Benefit Plan, Accumulated Benefit Obligation $ 5,747 $ 7,622  
Defined Benefit Plan, Target Plan Asset Allocations 100.00% 100.00%  
Accumulated Postretirement Benefit Obligation $ 1,731 $ 1,630  
Supplemental Employee Retirement Plan, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Benefit Obligation 3,518 3,481  
Pension and Other Postretirement Benefits Cost (Reversal of Cost) 461 364  
Cash Surrender Value of Life Insurance 43,364 40,038  
Defined Benefit Plan, Net Periodic Benefit Cost 101 153  
Other Postretirement Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Net Periodic Benefit Cost 11 17  
Defined Benefit Plan, Contributions by Employer $ 11 $ 17  
Defined Benefit Plan, Percentage of Plan Funded 106.70% 116.60%  
Cash And Cash Equivalents [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 16.60%    
Domestic equities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 25.10% 35.70%  
Fixed Income Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 21.70% 35.00%  
Other Investments [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 36.60% 29.30%  
JPMCB LDI Diversified Balanced Fund [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Investment concentration 96.00% 100.00%  
Maximum [Member] | Other Postretirement Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Contribution Percentage 5.00%    
Commingled Pensions Trust Fund [Member] | Minimum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 10.00%    
Commingled Pensions Trust Fund [Member] | Minimum [Member] | Global Equity, Global Fixed Income, Real Estate And Cash-Plus [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 35.00%    
Commingled Pensions Trust Fund [Member] | Maximum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 65.00%    
Commingled Pensions Trust Fund [Member] | Maximum [Member] | Global Equity, Global Fixed Income, Real Estate And Cash-Plus [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 90.00%    
Short-Term Investment Fund (STIF) [Member] | Other Investments [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Investment concentration 96.00% 100.00%  
Investment amount $ 7,000 $ 0