Real Estate - Schedule of Property Dispositions (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
		May 16, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale			$ 757	$ 0	$ (441)	$ 0
Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price	[1]				64,510
Gain (Loss) on Sale	[1]				$ 757
Disposed of by sale | Shops at Grand - Queens, NY
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price		$ 48,300
Gain (Loss) on Sale		$ 2,200
Fund IV | Disposed of by sale | 2208-2216 Fillmore Street - San Francisco, CA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date sold					Apr. 03, 2024
Sale Price					$ 9,777
Gain (Loss) on Sale					$ 1,239
Fund IV | Disposed of by sale | 2207 Fillmore Street - San Francisco, CA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date sold					Apr. 03, 2024
Sale Price					$ 4,283
Gain (Loss) on Sale					$ 1,130
Core Portfolio | Disposed of by sale | Shops at Grand - Queens, NY
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date sold					May 16, 2024
Sale Price					$ 48,250
Gain (Loss) on Sale					$ (2,213)
Fund V | Disposed of by sale | Canton Marketplace (Outparcel) - Canton, GA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date sold					Jun. 28, 2024
Sale Price					$ 2,200
Gain (Loss) on Sale					$ 601

[1] During the six months ended June 30, 2024, the Company recorded a $1.2 million loss related to a Fund IV property that was sold in 2019 in connection with a post-closing dispute.