XML 29 R21.htm IDEA: XBRL DOCUMENT v3.22.2.2
Significant Accounting Policies and Significant Recent Accounting Pronouncements (Details) - USD ($)
3 Months Ended 9 Months Ended
May 31, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Aug. 31, 2021
Significant Accounting Policies [Line Items]          
Allowance for Doubtful Accounts Receivable $ 196,000   $ 196,000   $ 161,000
Inventory Valuation Reserves 1,672,000   1,672,000   1,578,000
Fair Value Estimate Not Practicable Securities Sold Not Yet Purchases 0   0   0
Company's obligations $ 0   $ 0   $ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 40,000 40,000 40,000 40,000  
Convertible Preferred Stock, Shares Issued upon Conversion 36,000 36,000 36,000 36,000  
Exchange Rate On Foreign Currency Translation And Transactions     $ 0.79 $ 0.78  
Percentage of Revenue Per Entity, Maximum 10.00% 10.00% 10.00% 10.00%  
Canada          
Significant Accounting Policies [Line Items]          
Exchange Rate On Foreign Currency Translation And Transactions     $ 0.79 $ 0.83  
Sales Revenue, Net | Customer Concentration Risk | Non-US          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     12.00% 11.00%  
Sales Revenue, Net | Customer Concentration Risk | Canada          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     28.00% 31.00%  
Sales Revenue, Net | Customer Concentration Risk | Asia          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     47.00% 45.00%  
Accounts Receivable | Customer Concentration Risk | Non-US          
Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage     15.00% 15.00%