Consolidated Balance Sheets (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2012
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	250,000	250,000
Preferred stock, shares issued	15,648	15,710
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	7,451,022	7,425,472
Series 2009 Preferred Stock [Member]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares issued	3,710	3,710
Preferred stock, dividend rate, percentage	8.00%	8.00%
Series 2011 Preferred Stock
Preferred stock, par value	$ 1.00	$ 1.00	$ 1.00
Preferred stock, shares issued	11,938	12,000	12,000
Preferred stock, dividend rate, percentage	8.00%	8.00%