Leases (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Lessee Lease Description [Line Items]
Operating Lease, Right-of-Use Asset, Accumulated Amortization	$ 0.7
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other long-term assets
Finance leases, right-of-use assets	$ 0.6
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net
Amortization of finance lease assets	$ 0.1
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
Minimum [Member]
Lessee Lease Description [Line Items]
Finance lease term applicable to depreciate right-of-use assets and lease liabilities	3 years