Consolidation Of Variable Interest Entities As A Non-Controlling Interest (Details) (USD $)	12 Months Ended				36 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014
Variable Interest Entity [Line Items]
Number of types of container fund arrangements	2
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
Contribution of cash and other asserts	27,810,000	31,141,000			27,810,000
Fair value of net investment in direct finance leases	94,964,000	81,208,000			94,964,000
Contribution of cash and other assets	144,799,000	130,967,000			144,799,000
Non-controlling interest	789,000	594,000			789,000
Net income attributable to non-controlling interest	111,000	594,000	816,000
Collateralized financing obligations	1,058,754,000	1,058,628,000			1,058,754,000
Net book value	1,564,777,000	1,465,092,000			1,564,777,000
Cash held by investor funds	26,000,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of container portfolios sold	0	0
Containers transferred to specific Japanese funds				16,000,000
Contribution of cash and other asserts		15,300,000
Contribution of cash and other assets		4,200,000
Non-controlling interest		19,500,000
Container [Member]
Variable Interest Entity [Line Items]
Total net book value during period					135,300,000
Net book value	102,300,000				102,300,000
Collateralized Financing Obligation [Member]
Variable Interest Entity [Line Items]
Collateralized financing obligations	122,574,000				122,574,000
Term Loans Held By VIE [Member]
Variable Interest Entity [Line Items]
Collateralized financing obligations	$ 9,845,000				$ 9,845,000