Segment Information (Segment Reporting Information By Container Leasing And Container Management Segments ) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Rental revenue											$ 196,591		$ 152,982		$ 106,694
Management fee revenue											7,866		12,094		12,957
Gain on sale of equipment portfolios													1,256		2,345
Finance lease income											7,948		7,593		3,710
Total revenue	54,561		53,898	52,987	50,959	49,854		44,939	39,725	39,407	212,405		173,925		125,706
Depreciation of rental equipment											67,109		48,352		33,633
Amortization of intangible assets											780		902		1,254
Gain on disposition of used rental equipment											(7,356)		(12,445)		(13,374)
Storage, handling and other expenses											19,257		9,402		5,513
Marketing, general and administrative expense											23,848		24,658		21,009
Loss (Gain) on foreign exchange											82		170		(354)
Total operating expenses	27,770		27,695	25,144	23,111	20,268		18,893	15,363	16,515	103,720		71,039		47,681
Operating income	26,791		26,203	27,843	27,848	29,586		26,046	24,362	22,892	108,685		102,886		78,025
Interest expense before write-off of deferred financing costs											37,113
Interest expense											36,005		28,796		16,139
Interest income											(5)		(9)		(12)
Net interest expense											37,108		28,787		16,127
Net income before income taxes and non-controlling interest											71,577		74,099		61,898
Total assets	1,675,589	[1]				1,387,941	[1]				1,675,589	[1]	1,387,941	[1]	953,368
Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Rental revenue											196,591		152,982		106,694
Finance lease income											7,948		7,593		3,710
Total revenue											204,539		160,575		110,404
Depreciation of rental equipment											67,109		48,352		33,633
Amortization of intangible assets											351		487		625
Gain on disposition of used rental equipment											(7,356)		(12,445)		(13,374)
Storage, handling and other expenses											19,257		9,402		5,513
Marketing, general and administrative expense											21,463		18,320		14,412
Loss (Gain) on foreign exchange											82		170		(354)
Total operating expenses											100,906		64,286		40,455
Operating income											103,633		96,289		69,949
Interest expense before write-off of deferred financing costs											37,113
Interest expense													28,796		16,139
Net interest expense											37,113		28,796		16,139
Net income before income taxes and non-controlling interest											66,520		67,493		53,810
Total assets	1,664,851					1,368,236					1,664,851		1,368,236		933,094
Equipment Management [Member]
Segment Reporting Information [Line Items]
Management fee revenue											7,866		12,094		12,957
Gain on sale of equipment portfolios													1,256		2,345
Total revenue											7,866		13,350		15,302
Amortization of intangible assets											429		415		629
Marketing, general and administrative expense											2,385		6,338		6,597
Total operating expenses											2,814		6,753		7,226
Operating income											5,052		6,597		8,076
Net income before income taxes and non-controlling interest											5,052		6,597		8,076
Total assets	10,738					19,705					10,738		19,705		20,274
Unallocated [Member]
Segment Reporting Information [Line Items]
Interest income											(5)		(9)		(12)
Net interest expense											(5)		(9)		(12)
Net income before income taxes and non-controlling interest											$ 5		$ 9		$ 12

[1] Total assets at December 31, 2013 and December 31, 2012 include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash, $14,600 and $3,695; Net investment in direct finance leases, $137 and $0; and Rental equipment net of accumulated depreciation, $84,107 and $62,286, respectively.