Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Amortization of right-of-use assets	$ 38	$ 49	$ 93
Interest on lease liabilities	2	5
Operating lease cost	33,422	33,782
Variable lease cost	619	(7,068)
Total lease cost	$ 34,081	$ 26,768