Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Narrative) (Details)		3 Months Ended		9 Months Ended
		Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CamdenResidentReliefFundPersons		8,200
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	[1]	$ 2,154,000	$ 2,133,000	$ 5,909,000	$ 5,954,000
Amortization of Intangible Assets		300,000	3,400,000	9,100,000	8,800,000
Capitalized interest		4,400,000	4,000,000.0	13,000,000.0	9,900,000
Capitalized real estate taxes		800,000	400,000	3,700,000	$ 2,300,000
Remainder of 2020		258,500		258,500
2021		460,300		460,300
2022		6,600		6,600
2023		5,900		5,900
2024		5,000.0		5,000.0
Thereafter		33,400		33,400
Lessor, Operating Lease, Payments to be Received		769,700		769,700
Outstanding notes receivable		$ 7,900,000		$ 7,900,000		$ 7,900,000
Weighted average interest rate on outstanding notes receivable				7.00%	7.00%
Amortization of Below Market Lease			$ 100,000		$ 100,000
Residential Leases [Member] | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Term of lease contract		14 months		14 months
Camden Operating L P [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Outstanding common limited partnership units, ownership interest				92.00%
General Partner of Consolidated Operating Partnerships, Ownership Interest				1.00%
Camden Summit Partnership L P [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Outstanding common limited partnership units, ownership interest				95.00%
General Partner of Consolidated Operating Partnerships, Ownership Interest				1.00%
Consolidated Entities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CamdenResidentReliefFundPersons		7,100
Non-consolidated entity [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CamdenResidentReliefFundPersons		1,100
Camden Resident Relief Fund [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CamdenResidentReliefFundsAmount		$ 10,400,000
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions		400,000
Camden Resident Relief Fund [Member] | Consolidated Entities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CamdenResidentReliefFundsAmount		9,100,000
Camden Resident Relief Fund [Member] | Non-consolidated entity [Member]
New Accounting Pronouncements or Change in Accounting Principle [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.