Investment in Unconsolidated Joint Ventures - Narrative (Details) $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Apr. 30, 2020	Mar. 31, 2020 USD ($) a	Feb. 29, 2020 USD ($) a	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Gross purchase price						$ 433,673	$ 57,772
Gain on sale of interest				$ (231)	$ 0	$ 45,999	$ 0
Gateway
Schedule of Equity Method Investments [Line Items]
Area of property | a		1,100,000
Gross purchase price		$ 52,200
Internal rate of return		17.00%
Gain on sale of interest		$ 44,700
Wildwood Associates
Schedule of Equity Method Investments [Line Items]
Gross purchase price			$ 900
Gain on sale of interest			$ 1,300
Area of land | a			6.3
Elimination of the remaining negative basis in the joint venture			$ 520
Carolina Square Holdings LP | LIBOR
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate (percent)	1.25%	1.90%