Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash dividends per share common stock (in dollars per share)	$ 0.20	$ 0.20
Shares of common stock purchased	33,503	36,176
Shares of common stock issued	2,141,186	2,139,376
Series C Preferred Stock
Cash dividends per share preferred stock (in dollars per share)	$ 2.50	$ 5.00
Series D Preferred Stock
Cash dividends per share preferred stock (in dollars per share)	$ 17.50