Investments in Real Estate Entities - Financial Position and Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Assets:
Real estate, net	$ 1,205,970		$ 1,204,470
Other assets	199,312		196,488
Total assets	1,405,282		1,400,958
Liabilities and partners' capital:
Mortgage notes payable and credit facility	781,234		782,257
Other liabilities	158,988		157,379
Partners' capital	465,060		461,322
Total liabilities and partners' capital	1,405,282		$ 1,400,958
Combined summary of the operating results of the accounted for using the equity method
Rental and other income	33,072	$ 35,255
Operating and other expenses	(12,181)	(14,204)
Interest expense, net	(8,056)	(8,554)
Depreciation expense	(8,689)	(21,696)
Net income	4,146	(9,199)
Equity Method Investment, Net Income (Loss), Portion Attributable To Parent	1,705	(528)
Equity Method Investments, Amortization Of Excess Investment And Other	(530)	(532)
Equity in income (loss) of unconsolidated real estate entities	$ 1,175	$ (1,060)