Organization and Background (Details) $ in Thousands	Sep. 30, 2020 USD ($) property_Unit property_unit property investment state	Dec. 31, 2019 USD ($) property
Real Estate Properties [Line Items]
Number of properties \| property	8
Number of states \| state	6
Number of units \| property_Unit	1,880
Carry value of investment property	$ 161,594	$ 169,689
Investments in unconsolidated joint ventures	175,484	$ 177,071
Real estate investments, other	$ 6,682
Unconsolidated joint ventures
Real Estate Properties [Line Items]
Number of properties \| property	31	30
Number of states \| state	9
Number of units \| property_Unit	9,162
Carry value of investment property	$ 1,082,703	$ 1,070,941
Number of investments \| investment	31
Number of units in properties in lease up stage \| property_Unit	741
Number of properties in real estate property, in lease up stage \| property_unit	2
Investments in unconsolidated joint ventures	$ 175,409
Unconsolidated joint ventures \| Minimum
Real Estate Properties [Line Items]
Equity interest percentage	32.00%
Unconsolidated joint ventures \| Maximum
Real Estate Properties [Line Items]
Equity interest percentage	90.00%
Multi-family
Real Estate Properties [Line Items]
Carry value of investment property	$ 154,987

Equity Method Investments, Number Of Investments

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Number Of Properties In Real Estate Property In Lease Up Stage

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Number Of Units In Real Estate Property In Lease Up Stage

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

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

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

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

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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Amount of real estate owned for income production and capital accretion potential, not otherwise specified in the existing taxonomy. Such real estate excludes that which is occupied or used in the business, for entertainment purposes, or held in inventory for specific purposes.

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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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