Note 8 - Information Concerning Sales To Major Customers (Tables)

12 Months Ended

Aug. 31, 2014

Risks and Uncertainties [Abstract]

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	2014		2013		2012
Customer # 1	$	34,244,000	$	23,695,000	$	20,248,000
Customer # 2	$	1,772,000	$	3,033,000	$	4,829,000
Customer # 3	$	2,395,000	$	3,583,000	$	5,131,000