Leases (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Option to extend, operating lease (up to)	15 years
Rental expense		$ 31,900	$ 29,700
2019		42,000
2020		36,200
2021		30,700
2022		21,400
2023		15,000
Thereafter		$ 40,400
Net investment in direct financing and sales-type lease	$ 141,310
Carrying amount of guaranteed residual value	$ 31,600
Minimum
Lessee, Lease, Description [Line Items]
Operating lease expiration date	2020
Finance lease expiration date	2021
Direct financing sales-type lease expiration date	2020
Maximum
Lessee, Lease, Description [Line Items]
Operating lease expiration date	2030
Finance lease expiration date	2047
Direct financing sales-type lease expiration date	2027