CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Statement Of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.20	$ 0.20
Common stock, shares authorized	4,000,000	4,000,000
Common stock, shares issued	2,614,506	2,614,506
Common stock, shares outstanding	2,157,920	2,074,257
Treasury stock, shares	241,372	305,135