Leases - Other Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 4.7
Operating cash flows from finance leases	0.3
Leased assets obtained in exchange for new finance lease liabilities	0.5
Leased assets obtained in exchange for new operating lease liabilities	$ 3.2