Income Taxes (Summary Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 4,395	$ 5,883
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	3,538	3,165
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions	1,112	1,784
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	1,693	2,218
Deferred Tax Assets, Other	4,876	4,543
Total Deferred Tax Assets	15,614	17,593
Deferred Tax Liabilities, Investments	5,680	11,637
Deferred Tax Liabilities, Other	9,871	9,158
Deferred Tax Liabilities, Gross	15,551	20,795
Deferred Tax Liabilities, Net		$ (3,202)
Deferred Income Tax Assets, Net	$ 63