Significant Accounting Policies and Significant Recent Accounting Pronouncements (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017	Aug. 31, 2017
Significant Accounting Policies [Line Items]
Allowance for Doubtful Accounts Receivable	$ 111,000		$ 111,000		$ 111,000
Inventory Valuation Reserves	$ 1,377,000		$ 1,377,000		1,220,000
Exchange Rate on Foreign Currency Translation and Transactions	$ 0.78	$ 0.74	$ 0.79	$ 0.75
Percentage of Revenue Per Entity, Maximum	10.00%	10.00%	10.00%	10.00%
Restricted Cash and Cash Equivalents, Current	$ 823,000		$ 823,000		$ 707,000	[1]
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			11.00%	11.00%

[1] Derived from the Company’s audited financial statements included in its Form 10-K for the year ended August 31, 2017 as filed with the U. S. Securities and Exchange Commission on November 22, 2017.