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Leases (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating lease expense $ 13,880 $ 14,694 $ 41,884 $ 68,927
Short-term and variable lease expense 34,808 26,429 84,279 47,390
Total lease expense $ 48,688 $ 41,123 $ 126,163 $ 116,317