Real Estate and Loans Receivable - Schedule of Unaudited Supplemental Pro Forma Operating Data (Detail) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition, Pro Forma Information [Abstract]
Total revenues	$ 108,800	$ 106,200	$ 218,700	$ 211,500
Net income	$ 50,200	$ 20,600	$ 99,800	$ 44,600
Net income per share/unit - diluted	$ 0.21	$ 0.09	$ 0.42	$ 0.19

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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