Income Taxes - Components of Deferred Taxes (Details) - USD ($)	Aug. 31, 2021	Aug. 31, 2020
Deferred tax assets (liabilities):
Net operating loss	$ 357,000	$ 405,000
Capital loss	49,000
Allowance for doubtful accounts	(14,000)	1,000
Accrued expenses	383,000	262,000
Accrued workers' compensation	(23,000)	(5,000)
Inventory adjustments	994,000	944,000
Unrealized losses on investment	(7,000)	54,000
Excess of tax over book depreciation	(957,000)	(850,000)
ROU Asset	(2,941,000)
ROU Liability	2,968,000
Other	62,000	63,000
Total deferred tax assets	871,000	874,000
Total deferred tax assets	$ 871,000	$ 874,000