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Investment in Unconsolidated Entities - Narrative (Details) | 12 Months Ended |
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Dec. 31, 2020 USD ($) derivative_instrument property unconsolidated_entity | Dec. 31, 2021 unconsolidated_entity
Interest Rate Swap |  |
Variable Interest Entity [Line Items] |  |
Derivative liability | $ 291,000 |
Retail |  |
Variable Interest Entity [Line Items] |  |
Equity method investment, Impairments | $ 6,059,000 |
IAGM Retail Fund I, LLC | Interest Rate Swap |  |
Variable Interest Entity [Line Items] |  |
Number of derivatives held | derivative_instrument | 2 |
Derivative liability | $ 530,000 |
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% |
IAGM Retail Fund I, LLC | Retail |  |
Variable Interest Entity [Line Items] |  |
Number of retail properties | property | 1 |
IAGM Retail Fund I, LLC |  |
Variable Interest Entity [Line Items] |  |
Ownership percentage | 55.00% | 55.00%
Number of equity method investments | unconsolidated_entity | 1 | 1
IAGM Retail Fund I, LLC | Retail |  |
Variable Interest Entity [Line Items] |  |
Equity method investment, Impairments | $ 11,016,000 |

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