Equity Investments in Unconsolidated Joint Ventures - Information of Fees Earned (Details) - Unconsolidated Joint Ventures - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Schedule of Equity Method Investments [Line Items]
Total revenue	$ 351	$ 51
Management fees
Schedule of Equity Method Investments [Line Items]
Total revenue	233	27
Leasing fees
Schedule of Equity Method Investments [Line Items]
Total revenue	118	0
Construction fees
Schedule of Equity Method Investments [Line Items]
Total revenue	$ 0	$ 24