The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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+ Details

Investments in Partnerships - Dispositions (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains (losses) on sales of investment real estate		$ (94)	$ 1,171	$ 11,169	$ 2,684
Partnership Interest
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage	25.00%
Undeveloped Land Parcel Adjacent To Gloucester Premium Outlets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains (losses) on sales of investment real estate	$ 600
Undeveloped Land Parcel Adjacent To Gloucester Premium Outlets \| Partnership Interest
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from real estate and real estate joint ventures	3,800
Gains (losses) on sales of investment real estate	$ 2,300