Leases (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Lessee, Lease, Description [Line Items]
COVID related rent abatement concessions	$ 0.1	$ 0.1
COVID related Deferred rent	$ 3.3	$ 3.3
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term		10 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term		15 years