Investments in and Advances to Unconsolidated Affiliates - Fund Investments - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2022
Schedule of Equity Method Investments [Line Items]
Proceeds from the disposition of properties , net	$ 224,558	$ 63,901	$ 20,930
840 N. Michigan Avenue
Schedule of Equity Method Investments [Line Items]
Impairment of Investment	50,800
La Frontera Village
Schedule of Equity Method Investments [Line Items]
Purchase Price	81,400
Fund V
Schedule of Equity Method Investments [Line Items]
Purchase Price	15,900
Fund V | Bridge Loan
Schedule of Equity Method Investments [Line Items]
Long-term line of credit, noncurrent	31,700			$ 52,000
Fund V Acquisition One
Schedule of Equity Method Investments [Line Items]
Purchase Price	26,500
Mortgage Loan	57,000
Mortgage Loan Funded at Closing	55,500
Fund V Acquisition Two
Schedule of Equity Method Investments [Line Items]
Purchase Price	15,300
Wood Ridge Plaza
Schedule of Equity Method Investments [Line Items]
Purchase Price	49,300
Mortgage Loan	36,600
Mortgage Loan Funded at Closing	32,300
Self Storage Management
Schedule of Equity Method Investments [Line Items]
Proceeds from the disposition of properties , net	6,000
Gains (Losses) on Sales of Investment Real Estate	1,500
Shoppes at South Hills
Schedule of Equity Method Investments [Line Items]
Purchase Price	47,600
Promenade at Manassas
Schedule of Equity Method Investments [Line Items]
Proceeds from the disposition of properties , net	46,000
Repayment related to mortgage	27,300
Venture Capital Gain (Loss), Net	12,800
Share of the gain based on ownership	$ 3,000