Equipment and Leasehold Improvements (Details) - USD ($)	Aug. 31, 2015	Aug. 31, 2014
Machinery and equipment	$ 5,658,000	$ 5,170,000
Furniture and fixtures	810,000	807,000
Vehicles	138,000	138,000
Leasehold improvements	1,556,000	1,528,000
Property, Plant and Equipment, Gross, Total	8,162,000	7,643,000
Less accumulated depreciation and amortization	(6,593,000)	(6,040,000)
Property, Plant and Equipment, Net, Total	$ 1,569,000	$ 1,603,000