Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Consolidated Balance Sheets [Abstract]
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
Preferred stock, shares outstanding	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	25,150,318	25,087,468	25,102,218
Treasury stock, shares	1,336,174	1,336,174	1,336,174