Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
SHAREHOLDERS' EQUITY
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	6,000,000	6,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	6,963,000	6,963,000
Treasury stock, shares	2,425,000	2,477,000