Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
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	23,405	24,881
Treasury stock, par value	$ 1.00	$ 1.00
Treasury stock, shares	2,008	532