Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 193,655	$ 200,417
Operating lease liabilities - current portion	24,016	23,971
Operating lease liabilities - non-current portion	192,787	200,037
Total operating lease liabilities	216,803	224,008
Property plant and equipment, gross	361	363
Accumulated depreciation	(344)	(338)
Property plant and equipment, net	17	25
Other current liabilities	20	28
Total finance lease liabilities	$ 20	$ 28
Weighted-average remaining lease term - finance leases	1 year	1 year
Weighted-average remaining lease term - operating leases	11 years	11 years
Weighted-average discount rate - finance leases	5.21%	5.21%
Weighted-average discount rate - operating leases	4.55%	4.55%