CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Condensed Consolidated Balance Sheets [Abstract]
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	24,916,425	25,270,970	25,967,705
Common stock, shares outstanding	24,916,425	25,270,970	25,967,705