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Real Estate Disposition Activities (Details) ft² in Thousands | 3 Months Ended | 15 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) residential_condominium home ft² community | Mar. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) residential_condominium ft² community | Dec. 31, 2020 USD ($)
Summary of income from discontinued operations |  |  |  |
Gains (Losses) on Sales of Investment Real Estate | $ 53,727,000 | $ 24,436,000 |  |
Number Of Communities Held For Sale | community | 1 |  | 1 |
Number of Residential Condominium Units Sold | residential_condominium | 10 |  | 80 |
Gain (Loss) on Sale of Other Investments | $ 131,000 | 4,903,000 |  |
Other Selling, General and Administrative Expense | 1,044,000 | $ 1,443,000 |  |
For-sale condominium inventory | $ 253,859,000 |  | $ 253,859,000 | $ 267,219,000
Number of Residential Condominiums Remaining to be Sold | residential_condominium | 92 |  | 92 |
eaves Stamford |  |  |  |
Summary of income from discontinued operations |  |  |  |
Number Of Apartment Homes Sold | home | 238 |  |  |
Proceeds from Sale of Real Estate | $ 72,000,000 |  |  |
Gains (Losses) on Sales of Investment Real Estate | 53,775,000 |  |  |
The Park Loggia [Member] |  |  |  |
Summary of income from discontinued operations |  |  |  |
Proceeds from Sale of Real Estate | $ 14,609,000 |  |  |
Number Of Residential Condominium Units | residential_condominium | 172 |  | 172 |
Commercial Square Feet | ft² | 66 |  | 66 |
Gain (Loss) on Sale of Other Investments | $ 131,000 |  |  |

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