Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Due from (to) Related Parties	$ 305	$ 666
Other	4,315	3,811
Investments in and advances to unconsolidated affiliates	291,156	322,326
Distributions in excess of income from, and investments in, unconsolidated affiliates	$ 10,505	9,939
840 N. Michigan
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	88.43%
Distributions in excess of income from, and investments in, unconsolidated affiliates	$ 1,673	0
KLA/ABS
Schedule of Equity Method Investments [Line Items]
Cost method investment, ownership percentage	36.70%
Cost Method Investment	$ 85,403	124,316
Self Storage Management
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	0.00%
Equity method investments	$ 0	207
640 Broadway
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	100.00%
Equity method investments	$ 0	17,825
Fund III
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	100.00%
Equity method investments	$ 0	18,032
Fund IV Other Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	98.57%
Equity method investments	$ 7,914	12,675
650 Bald Hill Road
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 10,203	11,677
Paramus Plaza
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%
Equity method investments	$ 936	1,975
Fund IV
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 19,053	26,327
Fund V Family Center at Riverdale
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	89.42%
Equity method investments	$ 4,995	12,449
Tri City Plaza
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 8,422	6,827
Frederick County Acquisitions
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 12,240	10,748
Wood Ridge Plaza
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 12,751	0
La Frontera Village
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 20,803	0
Shoppes at South Hills
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 44,677	0
Mohawk Commons
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	90.00%
Equity method investments	$ 775	0
Fund V
Schedule of Equity Method Investments [Line Items]
Equity method investments	104,663	30,024
Core Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 77,417	119,150
Core Portfolio | 840 N. Michigan
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	88.43%
Equity method investments	$ 0	51,513
Core Portfolio | Renaissance Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	20.00%
Equity method investments	$ 28,755	28,466
Core Portfolio | Gotham Plaza
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%
Equity method investments	$ 30,112	29,187
Core Portfolio | Georgetown Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%
Equity method investments	$ 4,048	4,089
Core Portfolio | 1238 Wisconsin Avenue
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	80.00%
Equity method investments	$ 14,502	5,895
Core Portfolio | Crossroads
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%
Distributions in excess of income from, and investments in, unconsolidated affiliates	$ 8,832	$ 9,939