Leases (Summary of Other Lease Information) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 13,205	$ 17,311
Operating cash flows from financing leases	44	35
Financing cash flows from financing leases	$ 122	$ (102)