Employee Benefit Plans (Employee Benefits Charged To Operating Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total employee benefits	$ 82,787	$ 78,010	$ 76,900
Payroll Taxes [Member]
Total employee benefits	29,580	28,084	27,664
Medical Plans [Member]
Total employee benefits	31,004	31,131	30,002
401K Plan [Member]
Total employee benefits	18,590	17,237	16,834
Pension Plans [Member]
Total employee benefits	516	388	410
Other [Member]
Total employee benefits	$ 3,097	$ 1,170	$ 1,990