Real Estate Assets - Schedule of Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Business Acquisition
Assets	$ 4,731,062		$ 4,731,062		$ 4,770,560
Liabilities	3,060,204		3,060,204		$ 2,836,444
Rental and other property revenues	114,831	$ 105,049	338,271	$ 298,569
Costs and Expenses	103,092	97,198	487,674	278,977
Interest Expense	29,879	28,799	90,608	83,166
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(3,602)	(2,137)	(199,075)	(6,094)
Net Income (Loss) Attributable to Parent	(3,494)	$ (2,078)	(195,560)	$ (5,956)
Joint Venture
Business Acquisition
Assets	39,843		39,843
Liabilities	26,142		26,142
Rental and other property revenues	651		651
Costs and Expenses	797		797
Interest Expense	94		94
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(240)		(240)
Net Income (Loss) Attributable to Parent	$ (120)		$ (120)