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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) | 1 Months Ended | 12 Months Ended |
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Oct. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | May 31, 2020 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2023 USD ($) jointVenture segment shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) jointVenture shares | Dec. 31, 2014 jointVenture | Jun. 29, 2018 USD ($) property
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Variable interest entity, number of entities | jointVenture |  |  |  |  | 2 |  |  |  |
Assets of VIEs |  |  |  |  | $ 6,944,078,000 | $ 7,341,982,000 |  |  |
Number of investments in unconsolidated joint ventures | jointVenture |  |  |  |  | 4 |  |  |  |
Payments to acquire equity method investments |  |  |  |  | $ 0 | $ 125,000 | $ 134,000 |  |
Provision for credit losses, net of recoveries as percent of revenue (as a percent) |  |  |  |  | 0.30% | 0.70% | 0.90% |  |
Weighted average limited partnership units outstanding, basic (in shares) | shares |  |  |  |  | 3,200,000 | 2,800,000 | 2,500,000 |  |
Number of reportable segments | segment |  |  |  |  | 1 |  |  |  |
Gross debt |  |  |  |  | $ 2,802,941,000 | $ 2,978,256,000 |  |  |
Limited partners' capital account, units outstanding (in shares) | shares |  |  |  |  | 3,512,868 | 2,870,697 |  |  |
Other property-related revenue |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Gain on sales of land |  |  |  |  | $ 1,700,000 | $ 4,500,000 | $ 500,000 |  |
Capital Unit, Class B |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of joint ventures in which units are issued | jointVenture |  |  |  |  |  |  |  | 3 |
Number of joint ventures in which units are issued, noncontrolling interest | jointVenture |  |  |  |  |  |  | 1 |  |
Amount of joint venture redemption | $ 9,700,000 |  |  |  |  |  |  |  |
Operating Partnership |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent (as a percent) |  |  |  |  | 98.40% | 98.70% |  |  |
Noncontrolling interest, ownership percentage by noncontrolling owners (as a percent) |  |  |  |  | 1.60% | 1.30% |  |  |
One Loudoun Downtown - Pads G & H Joint Venture |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent (as a percent) |  |  |  |  | 90.00% |  |  |  |
Mortgages payable |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Gross debt |  |  |  |  | $ 153,306,000 | $ 233,621,000 |  |  |
Mortgages payable | Fixed rate debt |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Gross debt |  |  |  |  | $ 136,306,000 | $ 205,328,000 |  |  |
Mortgages payable | One Loudoun Downtown - Pads G & H Joint Venture | Fixed rate debt |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  |  | 10 years |  |  |  |
Gross debt |  |  |  |  | $ 95,100,000 |  |  |  |
Percentage bearing fixed interest (as a percent) |  |  |  |  | 5.36% |  |  |  |
Three Property Retail Portfolio Joint Venture |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investment (as a percent) |  |  |  |  |  |  |  |  | 20.00%
Three Property Retail Portfolio Joint Venture | Livingston Shopping Center, Plaza Volente, and Tamiami Crossing |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties | property |  |  |  |  |  |  |  |  | 3
Consideration received |  |  |  |  |  |  |  |  | $ 99,800,000
Equity method investment |  |  |  |  |  |  |  |  | $ 10,000,000
Embassy Suites at Eddy St. Commons Joint Venture |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investment (as a percent) |  |  |  | 35.00% |  |  |  |  |
Payments to acquire equity method investments |  |  |  | $ 1,400,000 |  |  |  |  |
Construction loan payable |  |  |  |  | $ 32,700,000 |  |  |  |
Embassy Suites at Eddy St. Commons Joint Venture | Co-venturer |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Construction loan payable |  |  |  |  | 32,700,000 |  |  |  |
Embassy Suites at Eddy St. Commons Joint Venture | Co-venturer | Construction loan |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | 33,800,000 |  |  |  |
Glendale Multifamily Joint Venture |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investment (as a percent) |  |  | 12.00% |  |  |  |  |  |
Glendale Multifamily Joint Venture | Land |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Contribution of property |  |  | $ 1,600,000 |  |  |  |  |  |
Buckingham Mixed-Use Joint Venture |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investment (as a percent) |  | 50.00% |  |  |  |  |  |  |
Buckingham Mixed-Use Joint Venture | Land |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Contribution of property |  | $ 4,000,000 |  |  |  |  |  |  |
VIE |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Mortgage debt of VIEs |  |  |  |  | 112,100,000 |  |  |  |
Assets of VIEs |  |  |  |  | $ 216,500,000 |  |  |  |

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