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Significant Accounting Policies and Significant Recent Accounting Pronouncements (Details) - USD ($)
3 Months Ended 9 Months Ended
May 31, 2021
May 31, 2020
May 31, 2021
May 31, 2020
Aug. 31, 2020
Significant Accounting Policies [Line Items]          
Allowance for Doubtful Accounts Receivable $ 153,000   $ 153,000   $ 174,000
Inventory Valuation Reserves 1,784,000   1,784,000   1,764,000
Restricted Cash and Cash Equivalents, Current 10,000   10,000   2,916,000 [1]
Restricted Cash and Cash Equivalents $ 0   $ 0   $ 2,916,000
Exchange Rate On Foreign Currency Translation And Transactions $ 0.78 $ 0.74 $ 0.78 $ 0.74  
Percentage of Revenue Per Entity, Maximum     10.00% 10.00%  
Sales Revenue, Net | Customer Concentration Risk | Non-US          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     11.00% 9.00%  
Sales Revenue, Net | Customer Concentration Risk | Canada          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     31.00% 34.00%  
Sales Revenue, Net | Customer Concentration Risk | Asia          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     45.00% 43.00%  
Accounts Receivable | Customer Concentration Risk | Non-US          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     15.00% 11.00%  
[1] Derived from the Company’s audited financial statements included in its Form 10K for the year ended August 31, 2020 filed with the U.S. Securities and Exchange Commission on November 30, 2020.