Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Amortization of right-of-use assets	$ 8	$ 12	$ 30	$ 37
Interest on lease liabilities	1	1	2	4
Operating lease cost	8,160	8,591	24,475	25,151
Variable lease cost	181	(2,064)	270	(4,751)
Total lease cost	$ 8,350	$ 6,540	$ 24,777	$ 20,441