Acquisition and advisory fees as a percentage of the contract purchase price of real estate assets acquired.

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The asset management or advisory fee as a percentage of average invested assets.

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The entity's average invested assets.

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Commissions, performance fees and other fees as a percent of certain transactions and/or events payable to advisors in accordance with the advisory agreements.

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The cumulative noncompounded annual return to investors.

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The limit of operating expense reimbursement as a percentage of average invested assets.

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For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Related-Party Transactions and Arrangements (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Due to affiliates	$ 4,310,000		$ 4,310,000		$ 5,613,000
Due from affiliates	$ 0		$ 0		47,000
Advisors
Related Party Transaction [Line Items]
Operating expense reimbursement percent of average invested assets (percent)	2.00%		2.00%
Operating expense reimbursement percent of net income (percent)	25.00%		25.00%
Cumulative noncompounded annual return (percent)	8.00%		8.00%
Due to affiliates	$ 4,300,000		$ 4,300,000		5,600,000
Advisors \| Dead Deals Reimbursable by Advisor
Related Party Transaction [Line Items]
Due from affiliates	$ 0		$ 0		$ 47,000
Advisors \| Listing commission
Related Party Transaction [Line Items]
Commissions performance and other fees (percent)	15.00%		15.00%
Advisors \| Average invested assets between $0 to $2 billion
Related Party Transaction [Line Items]
Asset management or advisory fees (percent)	0.75%		0.75%
Advisors \| Average invested assets between $0 to $2 billion \| Maximum
Related Party Transaction [Line Items]
Average invested assets	$ 2,000,000,000		$ 2,000,000,000
Advisors \| Average invested assets between $0 to $2 billion \| Minimum
Related Party Transaction [Line Items]
Average invested assets	$ 0		$ 0
Advisors \| Average invested assets between $2 billion to $4 billion
Related Party Transaction [Line Items]
Asset management or advisory fees (percent)	0.70%		0.70%
Advisors \| Average invested assets between $2 billion to $4 billion \| Maximum
Related Party Transaction [Line Items]
Average invested assets	$ 4,000,000,000		$ 4,000,000,000
Advisors \| Average invested assets between $2 billion to $4 billion \| Minimum
Related Party Transaction [Line Items]
Average invested assets	$ 2,000,000,000		$ 2,000,000,000
Advisors \| Average invested assets over $4 billion
Related Party Transaction [Line Items]
Asset management or advisory fees (percent)	0.65%		0.65%
Average invested assets	$ 4,000,000,000		$ 4,000,000,000
Advisors \| Acquisition fees and expenses
Related Party Transaction [Line Items]
Acquisition and advisory fee (percent)	6.00%		6.00%
Related party transaction, expenses from transactions with related party	$ 1,052,000	$ 4,134,000	$ 2,355,000	$ 7,898,000
Advisors \| Acquisition fees and expenses \| Contract purchase price of each asset
Related Party Transaction [Line Items]
Acquisition and advisory fee (percent)	2.00%		2.00%
Advisors \| Brokerage Commission Fee \| Maximum
Related Party Transaction [Line Items]
Commissions performance and other fees (percent)	50.00%		50.00%
Advisors \| Property sales commission \| Contract sale price of each property
Related Party Transaction [Line Items]
Commissions performance and other fees (percent)	1.00%		1.00%
Advisors \| Property portfolio
Related Party Transaction [Line Items]
Commissions performance and other fees (percent)	6.00%		6.00%
Advisors \| Performance fee
Related Party Transaction [Line Items]
Commissions performance and other fees (percent)	15.00%		15.00%
Advisors \| Advisory fees and expenses
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 10,325,000	8,675,000	$ 20,513,000	16,807,000
Advisors \| Operating expenses
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	1,021,000	1,036,000	2,014,000	1,977,000
Advisors \| Subordinated performance fees
Related Party Transaction [Line Items]
Fees and commissions	0	0	0	0
Advisors \| Disposition fee
Related Party Transaction [Line Items]
Fees and commissions	0	0	0	0
Advisors \| Acquisitions and operations costs
Related Party Transaction [Line Items]
Due to affiliates	$ 4,300,000	$ 1,400,000	$ 4,300,000	$ 1,400,000