Annual report pursuant to Section 13 and 15(d)

Note 10 - Industry Segments and Financial Information About Foreign and Domestic Operations (Detail) - Operations by Geographic Area:

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Note 10 - Industry Segments and Financial Information About Foreign and Domestic Operations (Detail) - Operations by Geographic Area: (USD $)
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Net Revenues to External Customers $ 35,012 $ 18,516 $ 22,188
Long-Lived Assets 2,472 2,096  
South Africa [Member]
      
Net Revenues to External Customers 6,834 [1] 1,378 2,549 [1]
Brazil [Member]
      
Net Revenues to External Customers 6,720 955    [2]
United States [Member]
      
Net Revenues to External Customers 2,423 [1] 2,112 [1] 1,594
Long-Lived Assets 175 132  
Uganda [Member]
      
Net Revenues to External Customers    [2] 1,305    [2]
Zimbabwe [Member]
      
Net Revenues to External Customers    [2] 966 1,667
Malawi [Member]
      
Net Revenues to External Customers    [2]    [2] 2,543 [1]
DR of Congo [Member]
      
Net Revenues to External Customers    [2]    [2] 1,519
India [Member]
      
Net Revenues to External Customers 0 [2] 0 [2]    [2]
Long-Lived Assets 67 88  
United Kingdom [Member]
      
Net Revenues to External Customers 0 [2] 0 [2]    [2]
Long-Lived Assets 220 193  
Malaysia [Member]
      
Net Revenues to External Customers 0 [2] 0 [2]    [2]
Long-Lived Assets 2,010 1,683  
Other Countries [Member]
      
Net Revenues to External Customers $ 19,035 $ 11,800 $ 12,316
[1] Comprised of a single customer considered to be a major customer (exceeds 10 percent of net sales).
[2] Less than 5% percent of total net sales.