Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity
Common Stock, par value (in dollars per share)	$ 1	$ 1
Common Stock, authorized (in shares)	50,000,000	50,000,000
Common Stock, issued (in shares)	14,194,776	15,562,732
Treasury stock, shares held (in shares)	1,252,274	2,662,106