Leases (Components Of Lease Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Lease revenue - operating leases	$ 60,730	$ 65,962	$ 121,129	$ 135,159
Interest income on financing leases	11,292	11,092	22,915	22,482
Other revenue	2,945	3,100	5,162	5,905
Interest income on financing receivable	758	594	1,435	594
Total lease revenue	$ 75,725	$ 80,748	$ 150,641	$ 164,140