Leases (Maturity Of Leases As Lessee) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases, 2021	$ 33,328
Operating leases, 2022	33,388
Operating leases, 2023	32,579
Operating leases, 2024	30,692
Operating leases, 2025	28,521
Operating leases, Thereafter	144,402
Operating leases, Total lease payments	302,910
Operating leases, Less imputed interest	(67,405)
Total operating lease liabilities	235,505	$ 243,543
Finance leases, 2021	54
Finance leases, 2022	43
Finance leases, 2023	29
Finance leases, Total lease payments	126
Finance leases, Less imputed interest	(8)
Total finance lease liabilities	$ 118	$ 209