Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010
Consolidated Balance Sheets
Preferred stock, stated value	$ 1,000	$ 1,000	$ 1,000
Preferred stock, shares authorized	5,000,000	5,000,000	5,000,000
Preferred stock, shares issued	52,000	52,000	52,000
Common stock, par value	$ 1	$ 1	$ 1
Common stock, shares authorized	30,000,000	30,000,000	30,000,000
Common stock, shares issued	25,102,218	24,982,911	24,961,239
Treasury stock, shares	1,336,174	1,336,174	1,334,234