Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Feb. 29, 2016	Aug. 31, 2015
Accounts receivable, reserves	$ 1,468,000	$ 1,580
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	50,748,192	50,328,423
Common stock, shares outstanding (in shares)	41,007,840	41,316,902
Treasury stock, shares (in shares)	9,740,352	9,011,521