Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income
Lease income, net	$ 40,718	$ 55,613	$ 92,002	$ 111,112
Total income	41,639	57,294	94,077	114,149
Operating expenses
Depreciation and amortization	22,405	24,692	44,527	47,554
Property operating	6,184	7,139	13,292	15,077
Real estate taxes	7,218	8,958	15,707	18,009
General and administrative	8,387	8,886	15,582	17,409
Total operating expenses	44,194	49,675	89,108	98,049
Other income (expense)
Interest and other income, net	773	512	2,328	1,051
Interest expense, net	(4,924)	(5,627)	(9,733)	(11,105)
Loss on extinguishment of debt	(2,543)	(809)	(2,543)	(809)
Provision for asset impairment	0	0	(9,002)	0
(Loss) gain on sale of investment properties, net	(213)	5,662	244	5,662
Equity in (losses) earnings of unconsolidated entities	(149)	(1,079)	640	(620)
Total other expense, net	(7,056)	(1,341)	(18,066)	(5,821)
Net (loss) income from continuing operations	(9,611)	6,278	(13,097)	10,279
Net loss from discontinued operations	0	(12,000)	0	(25,500)
Net loss	$ (9,611)	$ (5,722)	$ (13,097)	$ (15,221)
Weighted-average number of common shares outstanding, basic (in shares)	720,849,620	728,654,374	720,837,742	728,606,945
Weighted-average number of common shares outstanding, diluted (in shares)	720,849,620	729,287,663	720,837,742	728,623,337
Net (loss) income per common share, from continuing operations, basic and diluted (in dollars per share)	$ (0.01)	$ 0.01	$ (0.02)	$ 0.01
Net loss per common share, from discontinued operations, basic and diluted (in dollars per share)	0	(0.02)	0	(0.03)
Net loss per common share, basic and diluted (in dollars per share)	(0.01)	(0.01)	(0.02)	(0.02)
Distributions declared per common share outstanding (in dollars per share)	0.02	0.02	0.04	0.04
Distributions paid per common share outstanding (in dollars per share)	$ 0.02	$ 0.02	$ 0.04	$ 0.04
Comprehensive loss
Net loss	$ (9,611)	$ (5,722)	$ (13,097)	$ (15,221)
Unrealized loss on derivatives	(2,332)	(204)	(16,473)	(316)
Reclassification to net income	745	(427)	600	(859)
Comprehensive loss	(11,198)	(6,353)	(28,970)	(16,396)
Other property income
Income
Income	208	821	399	1,272
Other fee income
Income
Income	$ 713	$ 860	$ 1,676	$ 1,765