Consolidated Statements of Changes in Equity (Parentheticals) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 1.4625	$ 1.4625
Series C Preferred Stock [Member]
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 1.50	$ 1.50