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Summary of Supplemental Cash Flow Information Related to Leases (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 35,057  
Operating cash flows from finance leases 276  
Financing cash flows from finance leases 1,267 $ 838
Right-of-use assets obtained in exchange for lease obligations:    
Operating leases 36,117  
Finance leases $ 5,768