Consolidation Of Variable Interest Entities As A Non-Controlling Interest (Details) (USD $)	3 Months Ended	9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013 item	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2010 Variable Interest Entity, Primary Beneficiary [Member]	Sep. 30, 2012 Variable Interest Entity, Primary Beneficiary [Member]	Sep. 30, 2013 Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of specific Japanese funds		2
Net proceeds from sale of equipment portfolios			$ 10,320,000
Gain on sale of equipment portfolios			1,256,000
Containers transferred to specific Japanese funds					16,000,000
Cash						15,300,000
Contribution of cash and other assets		116,912,000		95,114,000		4,200,000
Non-controlling interest						19,500,000
Gain or loss recognized upon the initial consolidation						0
Net income attributable to non-controlling interest	238,000		816,000
Sale and leaseback transaction of containers							85,000,000
Net book value of containers transferred		1,535,000		1,847,000			77,100,000
Cash held by investor funds							13,900,000
Collateralized financing obligations		$ 1,072,630,000		$ 888,990,000			$ 95,500,000