CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Distributions paid to common shareholders	$ 0.84	$ 0.84	$ 0.84
Distributions paid to Operating Partnership unit holders	0.84	0.84	0.84
Series A Preferred Stock [Member]
Distributions paid to preferred shareholders		1.7016	2.0625
Series B Preferred Stock [Member]
Distributions paid to preferred shareholders	1.8438	1.8438	$ 1.8438
Series C Preferred Stock [Member]
Distributions paid to preferred shareholders	1.80	1.5900
Series D Preferred Stock [Member]
Distributions paid to preferred shareholders	$ 1.7188	$ 0.4488