Quarterly report pursuant to Section 13 or 15(d)

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

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Note 7 - Industry Segments and Financial Information About Foreign and Domestic Operations (Detail) - Operations by Geographic Area (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Sep. 30, 2011
Net Revenues to External Customers $ 25,122 $ 11,456  
Long-lived Assets 2,408   2,096
United States 2,408   2,096
Brazil [Member]
      
Net Revenues to External Customers 6,720 [1] 703 [1]  
Long-lived Assets    [1]      [1]
United States    [1]      [1]
South Africa [Member]
      
Net Revenues to External Customers 3,792 [1] 1,126 [1]  
Long-lived Assets    [1]      [1]
United States    [1]      [1]
United States [Member]
      
Long-lived Assets 180   132
United States 1,792 1,631  
United States 180   132
Zimbabwe [Member]
      
Net Revenues to External Customers    [2] 966 [1]  
Long-lived Assets    [1]      [1]
United States    [1]      [1]
Mozambique [Member]
      
Net Revenues to External Customers    [2] 591  
France [Member]
      
Net Revenues to External Customers    [2] 672  
India [Member]
      
Net Revenues to External Customers    [2]    [2]  
Long-lived Assets 72   88
United States 72   88
United Kingdom [Member]
      
Net Revenues to External Customers    [2]    [2]  
Long-lived Assets 173   193
United States 173   193
Malaysia [Member]
      
Net Revenues to External Customers    [2]    [2]  
Long-lived Assets 1,983   1,683
United States 1,983   1,683
Other Countries [Member]
      
Net Revenues to External Customers $ 12,818 $ 5,767  
[1] Comprised of a single customer considered to be a major customer (exceeds 10 percent of net revenues).
[2] Less than 5 percent of total net revenues.