CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Dividend declared common share, per share	$ 0.43	$ 0.56	$ 0.60
Series A Preferred Stock
Dividend declared, per preferred share	2.156252	2.156252	2.156252
Series B Preferred Stock
Dividend declared, per preferred share	1.5625	1.5625	1.5625
Series C Preferred Stock
Dividend declared, per preferred share	$ 1.768578	$ 1.768578	$ 1.768578