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Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Leases [Abstract] |  |
Operating lease right-of-use assets | $ 226,855 | $ 220,503
Operating lease liabilities - current portion | 22,976 | 22,699
Operating lease liabilities - non-current portion | 222,918 | 212,806
Total operating lease liabilities | 245,894 | 235,505
Property plant and equipment, gross | 374 | 383
Accumulated depreciation | (299) | (271)
Property plant and equipment, net | 75 | 112
Other current liabilities | 45 | 49
Other long-term liabilities | 36 | 69
Total finance lease liabilities | $ 81 | $ 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 | 5.25% | 5.27%
Weighted-average discount rate - operating leases | 4.48% | 4.71%

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