Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Consolidated Balance Sheets (Unaudited) [Abstract]
Common Stock, par value (in dollars per share)	$ 1	$ 1
Common Stock, authorized shares (in shares)	50,000,000	50,000,000
Common Stock, issued shares (in shares)	15,364,489	15,562,732
Treasury stock shares held (in shares)	2,664,592	2,662,106