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Investment in Unconsolidated Entities - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) extension interest_rate_swap unconsolidated_entity	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) unconsolidated_entity
Variable Interest Entity [Line Items]
Long term debt, gross	$ 813,260		$ 536,955
Mortgages payable
Variable Interest Entity [Line Items]
Long term debt, gross	163,260		105,955
Interest Rate Swap
Variable Interest Entity [Line Items]
Derivative asset	1,758		291
IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Prepaid mortgages payable		$ 23,150
Senior notes repayments		$ 54,103
IAGM Retail Fund LLC | Mortgages payable
Variable Interest Entity [Line Items]
Long term debt, gross	$ 126,022
Number of extension options | extension	2
Extension option on line of credit, period	12 months
IAGM Retail Fund LLC | Interest Rate Swap
Variable Interest Entity [Line Items]
Number of derivatives held | interest_rate_swap	2
Derivative asset	$ 3,197		$ 530
IAGM Retail Fund LLC
Variable Interest Entity [Line Items]
Ownership percentage	55.00%		55.00%
Number of equity method investments | unconsolidated_entity	1		1

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