Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area

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Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Sep. 30, 2012
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers $ 26,668 $ 25,122  
Long-lived Assets 2,347   2,472
South Africa [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers 5,421 [1] 3,792 [2]  
Brazil [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers 4,480 [2] 6,720 [2]  
Nigeria [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers 2,878 [2]    
United States [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers 1,987 1,792  
Long-lived Assets 161   175
Congo [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers 1,706    [3]  
United Kingdom [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers    [3]    [3]  
Long-lived Assets 187   220
India [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers    [3]    [3]  
Long-lived Assets 50   67
Malaysia [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers    [3]    [3]  
Long-lived Assets 1,949   2,010
Other Countries [Member]
      
Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Details) - Operations by Geographic Area [Line Items]      
Net Revenues to External Customers $ 10,196 $ 12,818  
[1] Comprised of two customers considered to be major customers (exceeds 10 percent of net revenues)
[2] Comprised of a single customer considered to be a major customer (exceeds 10 percent of net revenues)
[3] Less than 5 percent of total net revenues.