Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Feb. 28, 2015	Aug. 31, 2014
Accounts receivable, reserves (in Dollars)	$ 1,641	$ 1,662
Preferred stock par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	49,714,486	49,110,218
Common stock, shares outstanding	41,630,258	41,792,802
Treasury stock shares	8,084,228	7,317,416