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Fair Value Of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Sep. 13, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Capital lease obligations	$ 5
Net investment in direct finance leases	103,368	$ 94,964
Fair Value [Member] \| Revolving Credit Facility [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of revolving credit facilities	657,000
Collateralized Financing Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	112,250
Collateralized Financing Obligations [Member] \| Fair Value [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of collateralized financing obligations	110,900
Term Loan [Member] \| Fair Value [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of term loans	293,600
Term Loan [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	7,577
Senior Secured Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	78,280		$ 103,000
Asset Backed Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 282,875