Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Lease income, lessor arrangements	$ 0.8	$ 1.5
Minimum
Lessee, Lease, Description [Line Items]
Lease term		5 years
Renewal term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term		10 years
Renewal term		10 years