Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Lessee, Lease, Description [Line Items]
Lease renewal term			5 years
Right-of-use assets obtained in exchange for operating lease liabilities			$ 0.0	$ 1.0
Operating lease payments	$ 0.1	$ 0.1	$ 0.4	$ 0.4
Operating lease, weighted average remaining lease term	5 years 9 months 18 days		5 years 9 months 18 days
Finance lease, weighted average remaining lease term	3 years 10 months 24 days		3 years 10 months 24 days
Operating lease, weighted average discount rate	8.30%		8.30%
Finance lease, weighted average discount rate	8.00%		8.00%
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term			1 year
Weighted average discount rate	4.86%		4.86%
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term			9 years
Weighted average discount rate	8.60%		8.60%