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Leases - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Lessee, Lease, Description [Line Items]    
Lease cost recognized $ 6,896 $ 14,491
Minimum    
Lessee, Lease, Description [Line Items]    
Lease term 1 year 1 year
Maximum    
Lessee, Lease, Description [Line Items]    
Lease term 10 years 10 years