Leases - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
ROU lease asset	$ 23.8
Operating lease liability	24.1
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
ROU lease asset	23.8	$ 23.2
Operating lease liability	$ 24.1	$ 23.2