CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Sep. 30, 2012	Dec. 31, 2011
Preferred stock, par value (in dollars per share)	$ 0.50	$ 0.50
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	10,890,163	10,890,163
Treasury stock, shares	492,278	532,233