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Investments in Joint Ventures (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment ownership percentage |  | 31.30% |  | 31.30% |
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions | [1] | $ 1,633,000 | $ 1,909,000 | $ 3,755,000 | $ 3,821,000
Maximum guaranteed amount of loans utilized for construction and development activities for joint ventures |  | 0 |  | 0 |
Maximum Investments by Formed Unconsolidated Joint Venture |  | 450,000,000 |  | 450,000,000 |
Maximum Investments by Formed Unconsolidated Joint Venture |  | 360,000,000 |  | 360,000,000 |
Fees earned for property and asset management, construction, development, and other services to joint ventures |  | $ 1,900,000 | $ 1,500,000 | $ 3,800,000 | $ 3,000,000.0
Maximum [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment ownership percentage |  | 40.00% |  | 40.00% |
Minimum [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity method investment ownership percentage |  | 20.00% |  | 20.00% |
Camden Resident Relief Fund [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
CamdenResidentReliefFundsAmount |  | $ 10,400,000 |  |  |
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions |  | 400,000 |  |  |
Camden Resident Relief Fund [Member] | Non-consolidated entity [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
CamdenResidentReliefFundsAmount |  | $ 1,300,000 |  |  |
[1] | Equity in income excludes our ownership interest of fee income from various services provided by us to the Funds.

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- Definition Revenue earned by providing property management, construction, development, and other services to joint ventures. + References No definition available. + Details
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- Definition Maximum investment by formed unconsolidated joint venture including leverage of approximately 50% of the estimated value of the underlying real estate after to change in June 2019. + References No definition available. + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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