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Significant Accounting Policies (Details Textual) (USD $)
3 Months Ended 9 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
May 31, 2013
Aug. 31, 2013
Significant Accounting Policies [Line Items]          
Letters of Credit Pledged as Collateral Towards Workers Compensation $ 2,713,000   $ 2,713,000   $ 2,713,000
Pledged Financial Instruments, Not Separately Reported, Securities for Letter of Credit Facilities 548,000   548,000   548,000
Allowance for Doubtful Accounts Receivable 88,000   88,000   183,000
Inventory Valuation Reserves 1,000,000   1,000,000   924,000
Exchange Rate on Foreign Currency Translation and Transactions $ 0.91 $ 0.98 $ 0.93 $ 1.00  
Entity Wide Information On Geographic Areas Sales From External Customers Percentage Attributed To Foreign Countries     7.00% 7.00%  
Entity Wide Information on Geographic Areas Trade Accounts Receivable from External Customers Percentage Attributed to Foreign Countries 8.00%   8.00%   5.00%
Percentage of Revenue Per Entity, Maximum 10.00% 10.00% 10.00% 10.00%  
Deferred Tax Assets, Valuation Allowance 1,557,000   1,557,000    
Operating Loss Carryforwards, Valuation Allowance, Total $ 176,000   $ 176,000