Leases (Maturity Of Leases As Lessee) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating leases, 2021	$ 8,015
Operating leases, 2022	34,005
Operating leases, 2023	33,830
Operating leases, 2024	32,054
Operating leases, 2025	29,891
Operating leases, Thereafter	181,475
Operating leases, Total lease payments	319,270
Operating leases, Less imputed interest	(73,376)
Total operating lease liabilities	245,894	$ 235,505
Finance leases, 2021	13
Finance leases, 2022	43
Finance leases, 2023	28
Finance leases, Total lease payments	84
Finance leases, Less imputed interest	(3)
Total finance lease liabilities	$ 81	$ 118