Interim Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) (Parentheticals) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Dividends declared to common stockholders per share	$ 0.34	$ 0.32
Preferred Stock [Member]
Dividends declared to preferred stockholders per share	$ 0.20	$ 0.20
Common Stock [Member]
Dividends declared to common stockholders per share	$ 0.34	$ 0.32