Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 208,955	$ 227,367
Operating lease liabilities - current portion	23,897	23,737
Operating lease liabilities - non-current portion	205,974	223,364
Total operating lease liabilities	229,871	247,101
Property plant and equipment, gross	364	374
Accumulated depreciation	(324)	(311)
Property plant and equipment, net	40	63
Other current liabilities	33	40
Other long-term liabilities	11	28
Total finance lease liabilities	$ 44	$ 68
Weighted-average remaining lease term - finance leases	1 year	2 years
Weighted-average remaining lease term - operating leases	11 years	11 years
Weighted-average discount rate - finance leases	5.21%	5.24%
Weighted-average discount rate - operating leases	4.48%	4.47%