Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets:
Receivable, fair value	$ 21,003	$ 0
Level 3 | Carrying Value
Liabilities:
Non-recourse debt	2,823,415	1,492,410
Level 3 | Fair Value
Liabilities:
Non-recourse debt	2,840,230	1,477,497
Level 3 | Notes Receivable | Carrying Value
Assets:
Receivable, fair value	21,003	0
Level 3 | Notes Receivable | Fair Value
Assets:
Receivable, fair value	21,338	0
Level 3 | Deferred acquisition fees receivable | Carrying Value
Assets:
Receivable, fair value	18,515	19,684
Level 3 | Deferred acquisition fees receivable | Carrying Value | CWI
Assets:
Receivable, fair value	11,000	0
Level 3 | Deferred acquisition fees receivable | Fair Value
Assets:
Receivable, fair value	19,665	20,733
Level 3 | Deferred acquisition fees receivable | Fair Value | CWI
Assets:
Receivable, fair value	11,000	0
Level 3 | Senior Unsecured Credit Facility | Carrying Value
Liabilities:
Lines of Credit, Fair Value Disclosure	476,700	275,000
Level 3 | Senior Unsecured Credit Facility | Fair Value
Liabilities:
Lines of Credit, Fair Value Disclosure	476,700	275,000
Level 3 | Unsecured Term Loan | Carrying Value
Liabilities:
Lines of Credit, Fair Value Disclosure	0	300,000
Level 3 | Unsecured Term Loan | Fair Value
Liabilities:
Lines of Credit, Fair Value Disclosure	0	300,000
Level 2 | Senior Unsecured Notes | Carrying Value
Liabilities:
Non-recourse debt	498,255	0
Level 2 | Senior Unsecured Notes | Fair Value
Liabilities:
Non-recourse debt	$ 498,255	$ 0