Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2012	Aug. 31, 2011
Common stock, par value (in USD per share)	$ 1.00	$ 1.00
Common stock, shares authorized	29,000	29,000
Common stock, shares issued	14,342	13,328
Treasury stock, shares	1,981	1,981