Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 1.25	$ 1.25
Common stock, shares authorized	12,000,000	12,000,000
Common stock, shares issued	8,832,177	8,790,399
Common stock, shares outstanding	8,832,177	8,790,399