CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
CONSOLIDATED STATEMENTS OF EQUITY
Cash dividend paid (in dollars per share)	$ 0.40	$ 0.35	$ 0.35
Change in funded status of pension plan, tax	$ 281	$ 297	$ 232
Net unrealized gain on restricted investments, tax	$ 20	$ 20	$ 21