Leases (Summary Of Lease Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Amortization of property and equipment	$ 131	$ 155	$ 268	$ 310
Interest expense on finance leases	22	28	47	57
Total finance lease expense	153	183	315	367
Operating lease expense	1,883	1,809	3,803	3,575
Sublease income	(91)	(92)	(183)	(216)
Total lease expense	$ 1,945	$ 1,900	$ 3,935	$ 3,726