Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lessee Lease Description [Line Items]
Option to extend, existence, operating lease			true
Finance leases, assets	$ 1.9		$ 1.9
Finance leases, liabilities	1.9		1.9
Operating lease costs	$ 1.6		$ 4.5
Operating leases rent expense		$ 1.2		$ 3.6
Minimum [Member]
Lessee Lease Description [Line Items]
Operating leases, options to extend leases term	1 year		1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating leases, options to extend leases term	5 years		5 years