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Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Amortization of in-place leases |  | $ 9,100 |  | $ 10,400 | $ 9,400 |  |
Amortization of Below Market Lease |  |  |  | 100 | 200 |  |
Capitalized interest |  | 17,400 |  | 14,100 | 13,600 |  |
Capitalized real estate taxes |  | 3,300 |  | 2,800 | 2,200 |  |
Property revenues |  | 10,800 |  | 8,696 | 7,231 |  |
Proceeds from Collection of Notes Receivable |  | 1,400 |  |  |  |  |
Proceeds from Interest Received |  | 600 |  |  |  |  |
Outstanding notes receivable |  | $ 6,423 |  | $ 7,868 | $ 9,314 |  | $ 18,790
Weighted average interest rate on outstanding notes receivable |  | 7.00% |  |  |  |  |
Percentage Of Rental Revenue And Other Income From Leasing Of Apartment Homes |  | 99.00% |  | 99.00% | 99.00% |  |
CamdenResidentReliefFundPersons |  | 8,200 |  |  |  |  |
Equity in income of joint ventures | [1] | $ 8,052 | [2] | $ 14,783 | $ 7,836 | [2] |
Non-consolidated entity [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
CamdenResidentReliefFundPersons |  | 1,100 |  |  |  |  |
Consolidated Entities [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
CamdenResidentReliefFundPersons |  | 7,100 |  |  |  |  |
Camden Resident Relief Funds [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
CamdenResidentReliefFundsAmount |  | $ 10,400 |  |  |  |  |
Equity in income of joint ventures |  | 400 |  |  |  |  |
Camden Resident Relief Funds [Member] | Non-consolidated entity [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
CamdenResidentReliefFundsAmount |  | 1,300 |  |  |  |  |
Camden Resident Relief Funds [Member] | Consolidated Entities [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
CamdenResidentReliefFundsAmount |  | $ 9,100 |  |  |  |  |
Camden Operating L P [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest |  | 92.00% |  |  |  |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest |  | 1.00% |  |  |  |  |
Camden Summit Partnership L P [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest |  | 95.00% |  |  |  |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest |  | 1.00% |  |  |  |  |
Residential Leases [Member] | Maximum [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Lessor, Operating Lease, Term of Contract |  | 14 months |  |  |  |  |
[1] | Equity in income excludes our ownership interest of fee income from various services provided by us to the Funds.
[2] | Equity in income for the year ended December 31, 2020 includes our ownership interest of the Resident Relief Funds payments of approximately $0.4 million. Equity in income for the year ended December 31, 2019 includes our ownership interest of the gain on sale of the operating property of approximately $6.2 million.

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