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v3.20.2

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 |

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