Business Segments - Schedule of Net Real Estate and Non-Recourse Property Debt, Net, by Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Buildings and improvements	$ 1,107,929	$ 995,116
Land	518,954	505,153
Total real estate	1,626,883	1,500,269
Accumulated depreciation	(527,976)	(495,010)
Net real estate	1,098,907	1,005,259
Non-recourse property debt and term loan, net	542,190	447,967
Development and Redevelopment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Buildings and improvements	169,474	61,813
Land	70,476	56,676
Total real estate	239,950	118,489
Accumulated depreciation	(1,210)	(447)
Net real estate	238,740	118,042
Non-recourse property debt and term loan, net	114,309
Operating Portfolio Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Buildings and improvements	777,568	772,786
Land	298,459	298,459
Total real estate	1,076,027	1,071,245
Accumulated depreciation	(493,784)	(469,873)
Net real estate	582,243	601,372
Non-recourse property debt and term loan, net	427,881	447,967
Other [Member] | Operating Segments
Segment Reporting Information [Line Items]
Buildings and improvements	160,887	160,517
Land	150,019	150,018
Total real estate	310,906	310,535
Accumulated depreciation	(32,982)	(24,690)
Net real estate	$ 277,924	$ 285,845