Consolidated Statements of Changes in Equity (Parentheticals) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 0.975	$ 0.975
Series C Preferred Stock [Member]
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 1.00	$ 1.00