Segment And Geographic Information (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017		Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenue		$ 115,452	$ 90,161	$ 316,531		$ 254,359
Total operating expenses		72,571	58,267	199,015		179,746
Operating income		42,881	31,894	117,516		74,613
Total other expenses		19,899	14,408	55,632		38,567
Income before income taxes		22,982	17,486	61,884		36,046
Goodwill		15,794		15,794				$ 15,794
Total assets	[1]	2,999,165		2,999,165				$ 2,428,128
Purchase of rental equipment				529,230	[2]	277,769
Container Leasing [Member]
Segment Reporting Information [Line Items]
Total revenue				208,298
Total operating expenses				95,153
Operating income				113,145
Total other expenses				44,284
Income before income taxes				68,861
Purchase of rental equipment	[2]			477,563
Rail Leasing [Member]
Segment Reporting Information [Line Items]
Total revenue				26,982
Total operating expenses				18,721
Operating income				8,261
Total other expenses				11,364
Income before income taxes				(3,103)
Purchase of rental equipment	[2]			51,667
Logistics [Member]
Segment Reporting Information [Line Items]
Total revenue				81,251
Total operating expenses				85,141
Operating income				(3,890)
Total other expenses				(16)
Income before income taxes				(3,874)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue		115,452	90,161			254,359
Total operating expenses		72,571	58,267			179,746
Operating income		42,881	31,894			74,613
Total other expenses		19,899	14,408			38,567
Income before income taxes		22,982	17,486			36,046
Goodwill		15,794	15,794	15,794		15,794
Total assets		2,999,165	2,356,157	2,999,165		2,356,157
Purchase of rental equipment		257,269	149,176			277,769	[2]
Operating Segments [Member] | Container Leasing [Member]
Segment Reporting Information [Line Items]
Total revenue		75,331	61,870			169,784
Total operating expenses		32,723	30,270			99,788
Operating income		42,608	31,600			69,996
Total other expenses		15,931	11,537			30,346
Income before income taxes		26,677	20,063			39,650
Total assets		2,481,010	1,910,899	2,481,010		1,910,899
Purchase of rental equipment		251,670	132,405			246,378	[2]
Operating Segments [Member] | Rail Leasing [Member]
Segment Reporting Information [Line Items]
Total revenue		8,759	7,279			23,459
Total operating expenses		5,789	5,534			16,038
Operating income		2,970	1,745			7,421
Total other expenses		3,973	2,871			8,220
Income before income taxes		(1,003)	(1,126)			(799)
Total assets		474,718	405,118	474,718		405,118
Purchase of rental equipment		5,599	16,771			31,391	[2]
Operating Segments [Member] | Logistics [Member]
Segment Reporting Information [Line Items]
Total revenue		31,362	21,012			61,116
Total operating expenses		34,059	22,463			63,920
Operating income		(2,697)	(1,451)			(2,804)
Total other expenses		(5)				1
Income before income taxes		(2,692)	(1,451)			(2,805)
Goodwill		15,794	15,794	15,794		15,794
Total assets		$ 43,437	$ 40,140	$ 43,437		$ 40,140

[1] Total assets at September 30, 2018 and December 31, 2017 include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash, $23,779 and $20,685; Net investment in direct finance leases, $9,375 and $4,423; and Rental equipment, net of accumulated depreciation, $73,110, and $61,842, respectively.

[2] Represents cash disbursements for purchasing of rental equipment as reflected in the consolidated statements of cash flows for the periods indicated.