Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Lessor, operating lease, term of contract	1 year		1 year
Lessee, operating lease, weighted average discount rate	4.74%		4.74%		4.70%
Operating lease, weighted average remaining lease term	1 year 7 months 6 days		1 year 7 months 6 days		1 year 10 months 24 days
Rent expense	$ 0.2	$ 0.1	$ 0.3	$ 0.3
Operating lease, right-of-use asset	$ 0.6		$ 0.6		$ 0.9
Finance lease, weighted average discount rate	7.78%		7.78%		6.87%
Finance lease, weighted average remaining lease term	3 years 4 months 24 days		3 years 4 months 24 days		3 years 8 months 12 days
Finance lease, amortization	$ 0.2	$ 0.1	$ 0.5	$ 0.3
Finance lease, right-of-use asset	$ 2.6		$ 2.6		$ 2.9