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Leases Lease Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Finance Lease, Cost [Abstract] (Deprecated 2019-01-31)    
Amortization of leased assets $ 135 $ 863
Interest of lease liabilities 302 641
Operating lease cost 39,590 137,943
Short-term lease cost 4,218 11,176
Variable lease cost 29,260 89,030
Total lease cost $ 73,505 $ 239,653