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Investment in Unconsolidated Entities - Narrative (Details) ft² in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022 USD ($) ft² interest_rate_swap unconsolidated_entity	Jun. 30, 2022 USD ($) ft² interest_rate_swap unconsolidated_entity	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) unconsolidated_entity
Variable Interest Entity [Line Items]
Proceeds from sale of investment properties, net		$ 54,276	$ 1,317
Long term debt, gross	$ 706,485	706,485		$ 536,955
Mortgages payable
Variable Interest Entity [Line Items]
Long term debt, gross	163,485	163,485		105,955
Interest Rate Swap
Variable Interest Entity [Line Items]
Derivative asset	1,520	1,520		291
IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Gain on sale	1,244
Deferred gain on sale of property	$ 684	684
Equity investment basis adjustment, amortization period (in years)	30 years
Prepaid mortgages payable			$ 23,150
IAGM Retail Fund LLC | Mortgages payable
Variable Interest Entity [Line Items]
Long term debt, gross	$ 126,022	$ 126,022
IAGM Retail Fund LLC | Interest Rate Swap
Variable Interest Entity [Line Items]
Number of derivatives held | interest_rate_swap	2	2
Derivative asset	$ 2,764	$ 2,764		$ 530
Retail
Variable Interest Entity [Line Items]
Gross leasable area (square feet) | ft²	765	765
Gross Acquisition Price		$ 238,470
Retail | Highlands of Flower Mound
Variable Interest Entity [Line Items]
Gross Acquisition Price	$ 38,000
Retail | IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Assumption of Mortgage Debt	22,880	22,880
Retail | Price Plaza
Variable Interest Entity [Line Items]
Deferred gain on sale of property	2,063	2,063
Assumption of Mortgage Debt	$ 17,800	$ 17,800
Retail | Price Plaza | IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Gross leasable area (square feet) | ft²	206	206
Proceeds from sale of investment properties, net		$ 39,100
Gain on sale		$ 3,751
IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Ownership percentage	55.00%	55.00%		55.00%
Number of equity method investments | unconsolidated_entity	1	1		1

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