Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash dividends per share preferred stock (in dollars per share)	$ 7.50	$ 25.00
Cash dividends per share common stock (in dollars per share)	$ 0.20	$ 0.20
Shares of common stock purchased	32,211	66,415
Shares of common stock issued	138,537	49,514