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Leases - Components of Lease Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Lessee, Lease, Description [Line Items]        
Operating lease costs $ 41,610 $ 10,458 $ 103,022 $ 31,759
Financing lease costs:        
Amortization of right-of-use assets 810 185 1,987 505
Interest on lease liabilities 130 9 176 31
Total financing lease costs 940 194 2,163 536
Variable lease costs 1,393 590 3,925 2,473
Total lease costs 43,943 $ 11,242 109,110 $ 34,768
Deemed Landlord Finance Lease        
Financing lease costs:        
Amortization of right-of-use assets 1,804   3,507  
Interest on lease liabilities 6,528   13,674  
Total financing lease costs $ 8,332   $ 17,181