| Note 7 - Major Customer Concentration | 3 Months Ended | ||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2014 | |||||||||||||||||||||||||||||||||||||
| Risks and Uncertainties [Abstract] | |||||||||||||||||||||||||||||||||||||
| Concentration Risk Disclosure [Text Block] | 
      Note 7.  Major Customer Concentration
     
      The following table summarizes customers comprising 10% or more of net sales for the three months ended December 31, 2014 and December 31, 2013:
     
 
      * Less than 10%
     
      As of both December 31, 2014 and September 30, 2014, Customer C accounted for 10% of accounts receivable.
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