Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	35,000,000	35,000,000
Common stock, shares issued	8,615,659	8,614,837
Common stock, shares outstanding	8,606,456	8,605,901
Treasury Stock, Shares	9,203	8,936