Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 227,367	$ 220,503
Operating lease liabilities - current portion	23,737	22,699
Operating lease liabilities - non-current portion	223,364	212,806
Total operating lease liabilities	247,101	235,505
Property plant and equipment, gross	374	383
Accumulated depreciation	(311)	(271)
Property plant and equipment, net	63	112
Other current liabilities	40	49
Other long-term liabilities	28	69
Total finance lease liabilities	$ 68	$ 118
Weighted-average remaining lease term - finance leases	2 years	3 years
Weighted-average remaining lease term - operating leases	11 years	11 years
Weighted-average discount rate - finance leases	5.24%	5.27%
Weighted-average discount rate - operating leases	4.47%	4.71%