Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Operating lease, impairment loss	$ 0.3
Operating lease, weighted average remaining lease term	4 years 7 months 6 days
Operating lease, weighted average discount rate, percent	6.07%
Operating lease, rent expense	$ 2.9
Operating lease, rent expense		$ 3.5	$ 3.4
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	6 years