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Leases - Supplemental Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Cash Flow, Operating Activities, Leases    
Cash paid for amounts included in the measurement of operating lease liabilities $ 26,048 $ 79,217
Right-of-use assets obtained in exchange for new operating lease liabilities $ 10,789 $ 18,221