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Significant Accounting Policies (Details Textual) - USD ($)
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Significant Accounting Policies [Line Items]    
Allowance for Doubtful Accounts Receivable $ 111,000 $ 111,000
Inventory Valuation Reserves $ 1,220,000 $ 1,307,000
Percentage of Revenue Per Entity, Maximum 10.00% 10.00%
Concentration Risk, Percentage 4.00% 5.00%
Shipping, Handling and Transportation Costs $ 2,760,000 $ 2,653,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 40,000 40,000
Convertible Preferred Stock, Shares Issued upon Conversion 36,000 36,000
Fair Value, Estimate Not Practicable, Securities Sold, Not yet Purchased $ 707,000 $ 1,425,000
Restricted Cash and Cash Equivalents, Current $ 707,000 $ 1,425,000
Sales Revenue, Net [Member]    
Significant Accounting Policies [Line Items]    
Concentration Risk, Percentage 9.00% 9.00%
Accounts Receivable [Member]    
Significant Accounting Policies [Line Items]    
Concentration Risk, Percentage 9.00% 14.00%