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Note 7 - Major Customer Concentration (Details) - Customers Comprising 10% or More of Net Sales (Sales Revenue, Net [Member], Customer Concentration Risk [Member])
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3 Months Ended | 9 Months Ended | ||||||||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Customer A [Member]
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| Concentration Risk [Line Items] | ||||||||||
| Customer | 21.00% | 19.00% | 16.00% | 22.00% | ||||||
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Customer B [Member]
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| Concentration Risk [Line Items] | ||||||||||
| Customer | 10.00% | [1] | [1] | [1] | ||||||
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Customer C [Member]
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| Concentration Risk [Line Items] | ||||||||||
| Customer | [1] | 12.00% | 26.00% | 13.00% | ||||||
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