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Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Leases [Abstract] |  |
Operating lease right-of-use assets | $ 213,625 | $ 220,503
Operating lease liabilities - current portion | 22,983 | 22,699
Operating lease liabilities - non-current portion | 205,723 | 212,806
Total operating lease liabilities | 228,706 | 235,505
Property plant and equipment, gross | 380 | 383
Accumulated depreciation | (281) | (271)
Property plant and equipment, net | 99 | 112
Other current liabilities | 49 | 49
Other long-term liabilities | 56 | 69
Total finance lease liabilities | $ 105 | $ 118
Weighted-average remaining lease term - finance leases | 2 years | 3 years
Weighted-average remaining lease term - operating leases | 10 years | 11 years
Weighted-average discount rate - finance leases | 5.27% | 5.27%
Weighted-average discount rate - operating leases | 4.71% | 4.71%

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