Equity Method Investments, Preferred Returns Rate

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- Definition

Equity Method Investments, Purchase Commitment, Funded Amount

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- Definition

Management And Other Fees From Affiliates

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Notes Receivable, Related Party, Interest Rate

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- Definition

Number Of Equity Method Investments Acquired During Period

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Number of units acquired.

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- Definition

Preferred Equity Investment, Commitment To Fund

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- Definition

Preferred Equity Investment, Redeemed Amount

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- Definition

Related Party Transaction, Revenues from Development and Redevelopment Fees

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The percentage rate used to calculate dividend payments on preferred stock.

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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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Primarily represents commissions incurred in the period based upon the sale by commissioned employees or third parties of the entity's goods or services, and fees for sales assistance or product enhancements performed by third parties (such as a distributor or value added reseller).

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Related Party Transactions (Details)	1 Months Ended						3 Months Ended			9 Months Ended		12 Months Ended			29 Months Ended
Related Party Transactions (Details)	Nov. 30, 2019 USD ($)	Aug. 31, 2019 USD ($)	Jun. 30, 2019 USD ($) apartment	Feb. 28, 2019 USD ($)	Oct. 31, 2018 USD ($) apartment	May 31, 2018 USD ($) apartment	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($) investment	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 30, 2016 USD ($)
Related Party Transaction [Line Items]
Debt assumed in connection with acquisition										$ 0	$ 143,006,000
Payments to acquire preferred equity investments										61,056,000	306,233,000
Preferred return rate							11.00%	11.30%
Commitment to fund preferred equity investment							$ 10,500,000	$ 91,400,000
Affiliated Entity
Related Party Transaction [Line Items]
Management and other fees from affiliates							3,000,000.0		$ 3,700,000	8,700,000	10,600,000
Development and redevelopment fees							600,000		$ 1,200,000	1,400,000	$ 3,600,000
Short-term loans outstanding and due from affiliates							5,500,000			5,500,000					$ 5,500,000	$ 4,400,000
Affiliated Entity \| Related party bridge loan - Wesco V
Related Party Transaction [Line Items]
Notes receivable	$ 85,500,000	$ 89,000,000.0
Interest rate	1.30%	1.30%
Affiliated Entity \| Related party bridge loan - BEX IV
Related Party Transaction [Line Items]
Notes receivable		$ 44,400,000
Interest rate		3.25%
Chairman and founder
Related Party Transaction [Line Items]
Payments to acquire preferred equity investments														$ 20,000,000.0
Number of preferred equity method investments acquired during period (in investments) \| investment														3
Preferred stock, stated interest percentage														9.50%
Redeemed amount												$ 5,000,000.0	$ 5,000,000.0
Chairman and founder \| Multifamily development community in La Mesa, CA
Related Party Transaction [Line Items]
Payments to acquire preferred equity investments				$ 24,500,000
Preferred return rate				11.00%
Chairman and founder \| Apartment home community development development in Burlingame, CA
Related Party Transaction [Line Items]
Number of units acquired \| apartment					268
Payments to acquire preferred equity investments					$ 18,600,000
Preferred return rate					12.00%
Chairman and founder \| Marcus & Millichap Company (MMC)
Related Party Transaction [Line Items]
Brokerage commissions							$ 0			$ 200,000
Chairman and founder \| Marcus & Millichap Company (MMC) \| Brio, Walnut Creek, CA
Related Party Transaction [Line Items]
Number of units acquired \| apartment			300
Payments to acquire real estate			$ 164,900,000
Debt assumed in connection with acquisition			$ 98,700,000
Chairman and founder \| Marcus & Millichap Company (MMC) \| Apartment home community in Ventura, CA
Related Party Transaction [Line Items]
Number of units acquired \| apartment						400
Preferred return rate						10.25%
Commitment to fund preferred equity investment						$ 26,500,000
Commitment funded amount															$ 23,300,000
Chairman and founder \| Marcus & Millichap Company (MMC) \| Related party note due October 2019
Related Party Transaction [Line Items]
Notes receivable																	$ 6,600,000