Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Nov. 30, 2013	Aug. 31, 2013
Receivables reserves (in Dollars)	$ 6,563	$ 4,894	[1]
Preferred stock par value (in Dollars per share)	$ 1.00	$ 1.00	[1]
Preferred stock, shares authorized (in Shares)	2,000,000	2,000,000	[1]
Preferred Stock, shares issued (in Shares)	0	0	[1]
Preferred Stock, shares outstanding (in Shares)	0	0	[1]
Common Class A [Member]
Common stock par value (in Dollars per share)	$ 0.10	$ 0.10	[1]
Common stock, shares authorized (in Shares)	30,000,000	30,000,000	[1]
Common stock, shares issued (in Shares)	15,164,182	15,129,524	[1]
Common stock, shares outstanding (in Shares)	15,164,182	15,129,524	[1]
Common Class B [Member]
Common stock par value (in Dollars per share)	$ 0.10	$ 0.10	[1]
Common stock, shares authorized (in Shares)	20,000,000	20,000,000	[1]
Common stock, shares issued (in Shares)	4,866,519	4,873,277	[1]
Common stock, shares outstanding (in Shares)	4,866,519	4,873,277	[1]

[1] Derived from audited financial statements