Leases - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Lease renewal term	5 years
Lease termination period	1 year
Right of use asset	$ 43.4
Lease liability	$ 48.6
Weighted average remaining lease term	5 years
Weighted average discount rate	4.11%
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	6 years