Leases (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) Lease
Lessee Lease Description [Line Items]
Number of lease agreements accounted for as operating leases | Lease		1
Operating leases, right-of-use assets	$ 0.8	$ 0.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Finance leases, right-of-use assets	$ 0.7	$ 0.7
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet	us-gaap:PropertyPlantAndEquipmentNet
Amortization of finance lease assets	$ 0.1	$ 0.3
Lease practical expedient (true/false)		true
Maximum [Member]
Lessee Lease Description [Line Items]
Operating and finance lease, lease terms		60 months
Finance lease term applicable to depreciate right-of-use assets and lease liabilities	5 years	5 years
Minimum [Member]
Lessee Lease Description [Line Items]
Finance lease term applicable to depreciate right-of-use assets and lease liabilities	3 years	3 years