Significant Accounting Policies and Significant Recent Accounting Pronouncements (Details) - USD ($)	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Allowance for doubtful accounts	$ 245,000	$ 164,000
Inventories	1,806,000	1,697,000
Impairment, Long-Lived Asset, Held-for-Use	0	0
Securities sold, but not yet purchased	0	0
Restricted Cash	$ 0	$ 0
Maximum percentage of freight revenues	1.00%	1.00%
Cost of revenues	$ 226,981,000	$ 209,060,000
Advertising costs	431,000	427,000
Right of use assets	9,988,000	$ 10,389,000
Lease liabilities	$ 10,200,000
Potentially dilutive common shares	40,000	40,000
Convertible preferred stock (in shares)	36,000	36,000
Exchange rate on foreign currency translation and transactions	$ 0.74	$ 0.79
Long-lived assets, impairments	$ 0	$ 0
Canada
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Exchange rate on foreign currency translation and transactions	$ 0.74	$ 0.77
Percentage of total assets	3.00%	3.00%
Shipping and handling expenses
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Cost of revenues	$ 5,510,000	$ 5,225,000
Building
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Estimated useful lives	35 years
Furniture, fixtures and equipment | Minimum
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Estimated useful lives	5 years
Furniture, fixtures and equipment | Maximum
Significant Accounting Policies and Significant Recent Accounting Pronouncements
Estimated useful lives	7 years