Investment in Unconsolidated Ventures - Summary of Real Estate Properties Owned (Details) - USD ($) $ in Thousands	May 04, 2021	Mar. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Land		$ 23,317	$ 25,585
Building		141,143	154,854
Building improvements		8,395	10,590
Real estate properties		172,855	191,029
Accumulated depreciation		(30,777)	(30,837)
Total real estate properties, net		142,078	160,192
Unconsolidated joint ventures
Schedule of Equity Method Investments [Line Items]
Land		148,341	148,341
Building		1,027,979	1,029,739
Building improvements		43,955	42,698
Real estate properties		1,220,275	1,220,778
Accumulated depreciation		(155,455)	(145,600)
Total real estate properties, net		$ 1,064,820	$ 1,075,178
Unconsolidated joint ventures | VIE | Civic Center I and Civic Center II - Southaven, MS | Subsequent Event | Property Acquisition
Schedule of Equity Method Investments [Line Items]
Purchase price	$ 6,031