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SERP Expense and Contributions paid (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension Cost (Reversal of Cost) $ 562,000 $ 1,200,000 $ 1,900,000
Supplemental Employee Retirement Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension Cost (Reversal of Cost) 1,681,000 2,275,000 1,770,000
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 475,000 $ 475,000 $ 475,000