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Leases - Additional Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]  
Option to extend leases 5 years
Option to terminate leases 1 year
Operating lease costs $ 3.4
Short-term lease costs $ 0.1
Minimum  
Lessee, Lease, Description [Line Items]  
Remaining lease terms 1 year
Maximum  
Lessee, Lease, Description [Line Items]  
Remaining lease terms 20 years