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Significant Accounting Policies (Details Textual) (USD $)
3 Months Ended 6 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2014
Feb. 28, 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
Restricted Cash and Cash Equivalents, Current 1,576,000   1,576,000   0
Allowance for Doubtful Accounts Receivable 110,000   110,000   183,000
Inventory Valuation Reserves $ 946,000   $ 946,000   $ 924,000
Exchange Rate on Foreign Currency Translation and Transactions $ 0.92 $ 1.00 $ 0.94 $ 1.01  
Entity Wide Information On Geographic Areas Sales From External Customers Percentage Attributed To Foreign Countries 7.00% 7.00% 7.00% 7.00%  
Entity Wide Information on Geographic Areas Trade Accounts Receivable from External Customers Percentage Attributed to Foreign Countries 10.00%   10.00%   10.00%
Percentage of Revenue Per Entity, Maximum 10.00% 10.00% 10.00% 10.00%