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Organization, Basis of Presentation and Significant Accounting Policies (Details) ft² in Thousands, $ in Thousands	3 Months Ended	15 Months Ended
	Mar. 31, 2021 USD ($) home residential_condominium community state ft²	Mar. 31, 2021 home residential_condominium community state ft²
Real Estate Properties [Line Items]
Number of operating apartment communities | community	275	275
Number of apartment homes included in operating apartment communities owned | home	81,227	81,227
Number of states where operating apartment communities owned are located | state	11	11
Number of owned communities under construction | community	15	15
Expected number of apartment homes under construction | home	4,560	4,560
Number of Residential Condominium Units Sold | residential_condominium	10	80
Communities under development rights | community	25	25
Estimated number of apartment homes in communities to be developed | home	8,075	8,075
Accounts Receivable, Credit Loss Expense (Reversal) | $	$ 18,645
The Park Loggia [Member]
Real Estate Properties [Line Items]
Number Of Residential Condominium Units | residential_condominium	172	172
Commercial Square Feet | ft²	66	66
Percent of Commercial Square Feet Leased	87.00%	87.00%

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- Definition

Additional number of communities owned (or in which a direct or indirect ownership interest is held) that can be expected to be developed.

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- Definition

Commercial Square Feet

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X

- Definition

Estimated number of apartment homes in communities awaiting development.

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- Definition

Expected aggregate number of homes to be constructed.

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- Definition

Number of owned communities (or where a direct or indirect interest is owned) that are under construction.

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- Definition

Number of Residential Condominium Units

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- Definition

Number of Residential Condominium Units Sold

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- Definition

Percent of Commercial Square Feet Leased

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X

- Definition

The number of real estate properties owned as of the balance sheet date.

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- Definition

The number of states the entity operates in as of the balance sheet date.

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- Definition

The number of units in a real estate property owned as of the balance sheet date.

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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(5))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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