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v3.20.4

Subsequent Events (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 02, 2021 $ / shares | Jan. 15, 2021 USD ($) | Jan. 21, 2021 USD ($) ft² propertyUnit | Dec. 31, 2020 USD ($) ft² $ / shares | Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 USD ($) $ / shares
Subsequent Event [Line Items] |  |  |  |  |  |
Gains on disposition of property |  |  |  | $ 215,897 | $ 39,517 | $ 37,638
Rentable square feet of commercial real estate (in square feet) | ft² |  |  |  | 27,200,000 |  |
Percentage of equity interest in joint ventures, maximum |  |  |  | 50.00% |  |
Highwoods Properties, Inc. [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Dividends declared per share of Common Stock (in dollars per share) | $ / shares |  |  |  | $ 1.92 | $ 1.90 | $ 1.85
Highwoods Properties, Inc. [Member] | Subsequent Event [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Dividends declared per share of Common Stock (in dollars per share) | $ / shares | $ 0.48 |  |  |  |  |
2021 Dispositions [Member] | Subsequent Event [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Sale price of disposition |  | $ 30,700 |  |  |  |
Gains on disposition of property |  | $ 18,900 |  |  |  |
Forum Portfolio Acquisition [Member] | Subsequent Event [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Percentage of partner's interest in asset acquired (in hundredths) |  |  | 75.00% |  |  |
Number of buildings sold | propertyUnit |  |  | 5 |  |  |
Rentable square feet of commercial real estate (in square feet) | ft² |  |  | 636,000 |  |  |
Purchase price of acquisition |  |  | $ 131,300 |  |  |
Percentage of equity interest in joint ventures, maximum |  |  | 25.00% |  |  |

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