Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease expense	$ 5,345	$ 5,864	$ 5,250
Finance lease expense:
Amortization of right-of-use assets	136	128	165
Interest on lease liabilities	29	6	15
Total finance lease expense	165	134	180
Variable lease expense	$ 1,478	$ 1,290	$ 1,476