Consolidation Of Variable Interest Entities As A Non-Controlling Interest (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) item	Mar. 31, 2015 item	Dec. 31, 2015 USD ($)
Variable Interest Entity [Line Items]
Total net book value	$ 621,000		$ 674,000
Net book value	1,751,345,000		1,748,211,000
Cash	17,968,000		17,447,000
Collateralized Financing Obligations [Member]
Variable Interest Entity [Line Items]
Long-term debt	99,000,000
Containers [Member]
Variable Interest Entity [Line Items]
Net book value	$ 71,100,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of types of container fund arrangements | item	2
Number of container portfolios sold | item	0	0
Total net book value	$ 176,400,000
Net book value	69,263,000		85,101,000
Cash	35,134,000		$ 35,106,000
Gain (loss) recognized on initial consolidation of VIEs	0
Variable Interest Entity, Primary Beneficiary [Member] | Term Loan [Member]
Variable Interest Entity [Line Items]
Long-term debt	$ 7,100,000