Retirement Agreements and Other Postretirement Benefit Plan Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Service cost – benefits earned during the year	$ 0	$ 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Personnel expenses	Personnel expenses
Interest cost on the projected benefit obligation	$ 26	$ 29
Amortization of unrecognized prior service cost	0	0
Amortization of unrecognized loss	12	0
Net periodic benefits cost at end of year	$ 38	$ 29