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Leases - Right of Use Assets and Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:AccruedLiabilitiesCurrent us-gaap:AccruedLiabilitiesCurrent
Right-of-use assets, net $ 291,601 $ 303,187
Accrued liabilities 79,540 74,065
Noncurrent lease liabilities 249,353 270,853
Total lease liabilities $ 328,893 $ 344,918
Weighted-average remaining lease term 6 years 7 months 6 days 6 years 7 months 6 days
Weighted-average discount rate 7.60% 7.90%