Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Stockholders' equity:
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	35,000,000	35,000,000
Common stock, shares issued	8,568,220	8,534,028
Common stock, shares outstanding	8,565,517	8,531,325
Treasury stock, shares	2,703	2,703