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Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2023
Jan. 01, 2022
Jan. 01, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]            
Minimum annual earnings credit per participant       $ 2    
Percentage of bonds with highest yields excluded from calculation of yield curve for pension plan assumptions       10.00%    
Percentage of bonds with lowest yields excluded from calculation of yield curve for pension plan assumptions       40.00%    
Pension plan, decline in discount rate (percent)       0.50%    
Expected long-term return on plan assets 6.20% 4.50% 4.40%      
Expected long-term return on plan assets in 2023       6.60%    
Defined Contribution Plan, eligible compensation for deferral in absence of election otherwise (percent)       4.00%    
Defined Contribution Plan, employee benefit plan expense       $ 188,000 $ 175,000 $ 168,000