Retirement Agreements And Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Retirement Benefits [Abstract]
Liability for employee benefits and other payments	$ 15,100		$ 15,100		$ 15,000
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the year	0	$ 0	0	$ 0
Interest cost on the projected benefit obligation	10	8	20	14
Amortization of unrecognized gain	(7)	(4)	(14)	(4)
Net periodic benefits costs	$ 3	$ 4	$ 6	$ 10