Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Equity:
Common Stock, par value	$ 1.00	$ 1.00
Common Stock, shares authorized	100,000	100,000
Common Stock, shares issued	25,413	25,413
Common Stock, shares outstanding	23,979	24,881
Treasury Stock, par value	$ 1.00	$ 1.00
Treasury Stock, shares	1,434	532