Investments in and Advances to Unconsolidated Affiliates - Fund Investments - Additional Information (Details) $ in Thousands, shares in Millions		3 Months Ended		12 Months Ended
	Jan. 20, 2023 USD ($) shares	Mar. 31, 2023 USD ($) Property shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Construction loan commitment				$ 12,800
Number of retail properties | Property		200
Proceeds from dividends received		$ 28,500	$ 500
Proceeds from the disposition of properties , net		0	$ 116,619
Investments carried at fair value or cost		4,342		4,315
1238 Wisconsin
Schedule of Equity Method Investments [Line Items]
Construction loan		2,000
Construction loan commitment		12,800
Mohawk Commons
Schedule of Equity Method Investments [Line Items]
Purchase Price		62,100
Mortgage Loan		39,700
840 N. Michigan Avenue
Schedule of Equity Method Investments [Line Items]
Impairment of investments				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		20,200		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		36,000		57,000
Mortgage Loan Funded at Closing		$ 31,800		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
Albertsons
Schedule of Equity Method Investments [Line Items]
Proceeds from dividends received	$ 28,500
Company's share on investment	$ 11,300
Share distributed to investor | shares	4.1
Investment owned, shares | shares	1.6	1.6