Income Taxes (Details 2) - USD ($)	Aug. 31, 2018	Aug. 31, 2017
Deferred tax assets:
Net operating loss	$ 508,000	$ 508,000
Allowance for doubtful accounts	(5,000)	3,000
Accrued expenses	209,000	395,000
Accrued workers' compensation	7,000	18,000
Inventory reserves	708,000	936,000
Unrealized losses on investment	(7,000)	(223,000)
Excess of tax over book depreciation	(235,000)	(113,000)
Other	26,500	43,000
Total deferred tax assets	1,211,500	1,567,000
Valuation allowance	(509,000)	(508,000)
Total deferred tax assets	$ 702,500	$ 1,059,000