Investment in Unconsolidated Joint Ventures - Carolina Square Holdings LP (Details) ft² in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) ft² apartment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Outstanding amount		$ 2,237,509	$ 2,162,719
Repayments of Notes Payable		109,469	$ 38,700	$ 691,179
Mortgage Debt
Schedule of Equity Method Investments [Line Items]
Outstanding amount		$ 661,500
Carolina Square Holdings LP
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage		50.00%
Number of apartment units | apartment		246
Cash balance of joint venture		$ 4,700
Carolina Square Holdings LP | Mortgage Debt
Schedule of Equity Method Investments [Line Items]
Outstanding amount	$ 135,700
Carolina Square Holdings LP | Mortgage Debt | LIBOR
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate (percent)	1.80%
Carolina Square Holdings LP | Construction Loans
Schedule of Equity Method Investments [Line Items]
Repayments of Notes Payable	$ 77,500
Pro-rata distribution	$ 26,000
Carolina Square Holdings LP | Office Space
Schedule of Equity Method Investments [Line Items]
Area of property | ft²		158
Carolina Square Holdings LP | Retail Space
Schedule of Equity Method Investments [Line Items]
Area of property | ft²		44
Carolina Square Holdings LP | Northwood Ravin
Schedule of Equity Method Investments [Line Items]
Ownership percentage of partner in joint venture		50.00%