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Commitments and Contingencies - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) Property ApartmentUnit Agreement | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Commitments And Contingencies [Abstract] |  |  |
Projects in various stages of development | 2 |  |
Partially owned projects in various stages of development | 1 |  |
Units in various stages of development | ApartmentUnit | 824 |  |
Consolidated project under development commitment fund | $ | $ 191.7 |  |
Various stages of development with estimated completion dates ranging through September 30, 2021 | Sep. 30, 2021 |  |
Number of projects completed and stabilized | 2 |  |
Number of joint venture agreements | Agreement | 2 |  |
Compensation expense, recognized | $ | $ 0.5 | $ 0.4 | $ 0.3

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- Definition Commitments and Contingencies. + References No definition available. + Details
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- Definition Represents the company's remaining funding obligation (i.e. total project costs less book value) for consolidated projects that are under development. + References No definition available. + Details
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- Definition Number of joint venture agreements. + References No definition available. + Details
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- Definition Number of partially owned projects in various stages of development. + References No definition available. + Details
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- Definition Number of projects completed and stabilized. + References No definition available. + Details
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- Definition Total number of open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These projects are consolidated. + References No definition available. + Details
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- Definition Total number of units that are associated with open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These units are consolidated. + References No definition available. + Details
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- Definition Represents the latest completion date for the current projects under development. + References No definition available. + Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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