Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 10	$ 10	$ 10
Preferred stock, liquidation value	$ 1,000	$ 1,000	$ 1,000
Preferred stock, shares authorized	500,000	500,000	500,000
Preferred stock, shares issued	35,595	35,595	35,595
Preferred stock, shares outstanding	35,595	35,595	35,595
Common stock, par value	$ 1.33	$ 1.33	$ 1.33
Common stock, shares authorized	36,000,000	36,000,000	36,000,000
Common stock, shares issued	26,057,501	26,004,197	25,955,213
Common stock, shares outstanding	26,057,501	26,004,197	25,955,213