| Note 1 - Basis of Presentation (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
| Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Sep. 30, 2011 | |
| Number of Geographical Locations | 137 | 137 | 137 | 120 | ||
| Standard Credit Term For Sales - Minimum | 30 days | 30 days | 30 days | |||
| Standard Credit Term For Sales - Maximum | 90 days | 90 days | 90 days | |||
| Average Days' Sales Outstanding | 46 days | |||||
| Bad Debt Expense to Product Revenue | 4.00% | |||||
| Allowance for Doubtful Accounts Receivable | $ 52,000 | $ 52,000 | $ 52,000 | $ 10,000 | ||
| Foreign Currency Transaction Gain, before Tax | 15,235 | |||||
| Foreign Currency Transaction Loss, before Tax | $ (15,235) | $ 18,022 | $ 69,294 | $ 74,251 | ||
| London, England [Member] | ||||||
| Area of Real Estate Property (in Square feet) | 6,400 | 6,400 | 6,400 | |||
| Selangor D.E., Malaysia [Member] | ||||||
| Area of Real Estate Property (in Square feet) | 16,000 | 16,000 | 16,000 | |||
| X | ||||||||||
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- Definition The average days' sales outstanding No definition available. 
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| X | ||||||||||
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- Definition No authoritative reference available. No definition available. 
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| X | ||||||||||
| 
- Definition Number of geographical locations. No definition available. 
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| X | ||||||||||
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- Definition The minimum standard credit term (in days) for sales. No definition available. 
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| X | ||||||||||
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- Definition The maximum standard credit term (in days) for sales. No definition available. 
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| X | ||||||||||
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition Area of a real estate property. No definition available. 
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| X | ||||||||||
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- Definition Aggregate realized and unrealized gain on foreign currency transactions included in net income. Includes gain on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition Aggregate realized and unrealized loss on foreign currency transactions included in net income. Includes loss on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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