Consolidated Statements of Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Number of common shares issued	496,335
Number of common shares retired	100,000
Common stock, dividends per share	$ 0.16
Series 2009 Preferred Stock [Member]
Preferred stock, dividends per share		$ 40
Series 2011 Preferred Stock [Member]
Preferred stock, dividends per share		$ 20