Leases (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term in years	3 years 9 months 18 days
Operating lease cost	$ 3.8
Minimum
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term in years	1 year
Maximum
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term in years	9 years