Discontinued Operations (Summary Of Components Of Income (Loss) From Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Discontinued Operations [Abstract]
Rail lease revenue	$ 6,462	$ 9,119	$ 14,343	$ 18,223
Depreciation of rental equipment	1,878	3,299	5,249	6,968
Storage, handling and other expenses	1,136	1,644	2,360	3,416
Gain on sale of rental equipment	(1,271)	(57)	(8,661)	(17)
Administrative expenses	1,030	835	2,356	1,851
Total operating expenses	2,773	5,721	1,304	12,218
Operating income	3,689	3,398	13,039	6,005
Interest expense	3,184	3,846	7,129	7,391
Income (loss) before income taxes	505	(448)	5,910	(1,386)
Loss on classification as held for sale	7,323		7,323
Loss from discontinued operations before income taxes	(6,818)	(448)	(1,413)	(1,386)
Income tax expense (benefit)	(1,618)	(94)	(342)	(291)
Net income (loss) from discontinued operations	$ (5,200)	$ (354)	$ (1,071)	$ (1,095)