Segment Reporting (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting [Abstract]
Rental income from real estate assets sold or held for sale	$ 1,972	$ 28,135	$ 15,837	$ 96,517
Operating expenses from real estate assets sold or held for sale	(1,092)	(10,259)	(7,237)	(34,894)
Net operating income from real estate assets sold or held for sale	$ 880	$ 17,876	$ 8,600	$ 61,623