Property, Equipment and Leasehold Improvements (Details) - USD ($)	Aug. 31, 2017	Aug. 31, 2016
Machinery and equipment	$ 7,154,000	$ 5,960,000
Furniture and fixtures	898,000	829,000
Vehicles	155,000	155,000
Leasehold improvements	1,756,000	1,576,000
Land	1,717,000	0
Building	5,490,000	0
Property, Plant and Equipment, Gross, Total	17,170,000	8,520,000
Less: accumulated depreciation and amortization	(7,914,000)	(7,125,000)
Property, Plant and Equipment, Net, Total	$ 9,256,000	$ 1,395,000