Quarterly report pursuant to Section 13 or 15(d)

Industry Segments And Financial Information About Foreign And Domestic Operations (Details)

v2.4.0.8
Industry Segments And Financial Information About Foreign And Domestic Operations (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Mar. 31, 2014
segment
Mar. 31, 2013
Sep. 30, 2013
Segment Reporting Information [Line Items]      
Number of reportable segments 1    
Net Revenues to External Customers $ 11,036 $ 19,387  
Long-Lived Asset 2,049   2,233
Angola [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 2,476 [1]    [2]  
South Africa [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 2,262 [1] 5,421 [1]  
U.S. [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 1,280 [1] 1,419  
Long-Lived Asset 115   154
Tanzania [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 908    [2]  
Congo [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 658 1,403  
Brazil [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers    [2] 2,240 [1]  
Uganda [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers    [2] 1,332  
Malaysia [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers    [2]    [2]  
Long-Lived Asset 1,730   1,853
U.K. [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers    [2]    [2]  
Long-Lived Asset 170   181
Other Countries [Member]
      
Segment Reporting Information [Line Items]      
Net Revenues to External Customers 3,452 7,572  
Long-Lived Asset $ 34   $ 45
Sales Less Than Five Percent [Member]
      
Segment Reporting Information [Line Items]      
Concentration risk, percentage 5.00%    
Sales Exceeding Ten Percent [Member]
      
Segment Reporting Information [Line Items]      
Concentration risk, percentage 10.00%    
[1] Exceeds 10 percent of total net revenues.
[2] Less than 5 percent of total net revenues.