Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2014 investment
Variable Interest Entities
Number of entities related to investments and financing (investment)	1
Carrying value of VIE	$ 39.4
Percent of acquisition fee to total contract price (percent)	6.00%
Real Estate Debt Investments
Period past due for suspension of income recognition	90 days

Net carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.

No definition available.

Name:	us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant