Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 1	$ 1	$ 1
Preferred stock, shares authorized	0	0	0
Preferred stock, issued	0	0	0
Preferred stock, outstanding	0	0	0
Common stock, par value	$ 1	$ 1	$ 1
Common stock, shares authorized	10,000,000	10,000,000	10,000,000
Common stock, shares issued	6,470,518	6,466,763	6,433,438
Common stock, shares outstanding	6,470,518	6,466,763	6,433,438