Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	12,000,000	12,000,000
Common stock, shares issued	7,440,518	7,440,518
Common stock, shares outstanding	6,894,158	6,875,001
Treasury stock, at cost	546,360	565,517