Consolidated Statements of Equity (Parentheticals) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Series A Preferred Stock [Member]
Preferred dividends (in dollars per share)	$ 1.95	$ 1.95	$ 1.95
Series C Preferred Stock [Member]
Preferred dividends (in dollars per share)	$ 2	$ 2	$ 2