Consolidated Statements of Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Common Stock, Dividends, Per Share, Declared	$ 0.24	$ 0.18	$ 0.10
Series A Preferred Stock [Member]
Preferred stock, dividend rate, (in dollars per share/unit)	1.95	1.95	1.95
Series C Preferred Stock [Member]
Preferred stock, dividend rate, (in dollars per share/unit)	$ 0.00	$ 2.00	$ 2.00