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Equity Investment Basis Adjustment, Amortization Period

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Equity Method Investment, Summarized Financial Information, Impairments

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- Definition

Area of a real estate property.

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- Definition

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fixed interest rate related to the interest rate derivative.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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- Definition

The number of derivative instruments of a particular group held by the entity.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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- Definition

The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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- Definition

The cash outflow for a borrowing supported by a written promise to pay an obligation.

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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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Investment in Unconsolidated Entities - Narrative (Details)	9 Months Ended
	Sep. 30, 2020 USD ($) derivative_instrument	Sep. 30, 2019 USD ($) ft²	Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items]
Proceeds from sale of investment properties, net	$ 5,791,000	$ 183,588,000
Interest Rate Swap
Variable Interest Entity [Line Items]
Derivative liability	347,000
IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Gain on sale	1,741,000
Repayment of mortgage note payable on one retail property	14,872,000
Deferred gain on sale of property	$ 958,000
Equity investment basis adjustment, amortization period (in years)	30 years
IAGM Retail Fund I, LLC \| Interest Rate Swap
Variable Interest Entity [Line Items]
Number of derivatives held \| derivative_instrument	2
Derivative liability	$ 631,000
IAGM Retail Fund I, LLC \| Interest Rate Swap \| One-month LIBOR
Variable Interest Entity [Line Items]
Variable rate (percent)	1.55%
IAGM Retail Fund I, LLC \| Interest Rate Swap, Effective Date April 1, 2020, 1.979% Fixed Interest
Variable Interest Entity [Line Items]
Notional amount	$ 45,000,000
Fixed interest rate	1.979%
IAGM Retail Fund I, LLC \| Interest Rate Swap, Effective Date April 1, 2020, 1.956% Fixed Interest
Variable Interest Entity [Line Items]
Notional amount	$ 30,000,000
Fixed interest rate	1.956%
Retail Site
Variable Interest Entity [Line Items]
Purchase price	$ 33,204,000	365,764,000
Retail Site \| Antoine Town Center
Variable Interest Entity [Line Items]
Purchase price	$ 22,254,000
Rockwell Plaza \| Retail Site
Variable Interest Entity [Line Items]
Equity method investment, Impairments		794,000
Gain on sale		$ 307,000
IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Ownership percentage	55.00%		55.00%
Investment in unconsolidated entities	$ 116,706,000		$ 118,861,000
IAGM Retail Fund I, LLC \| Rockwell Plaza \| Retail Site
Variable Interest Entity [Line Items]
Square Feet \| ft²		255,000
Proceeds from sale of investment properties, net		$ 20,500,000
Equity method investment, Impairments		1,443,000
Gain on sale		559,000
IAGM Retail Fund I, LLC \| Rockwell Plaza \| Retail Site \| Mortgages Payable
Variable Interest Entity [Line Items]
Extinguishment of Debt, Amount		$ 16,250,000