Quarterly report pursuant to Section 13 or 15(d)

Industry Segments and Financial Information About Foreign and Domestic Operations (Schedule Of Operations By Geographic Area) (Details)

v3.6.0.2
Industry Segments and Financial Information About Foreign and Domestic Operations (Schedule Of Operations By Geographic Area) (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
segment
customer
Dec. 31, 2015
USD ($)
customer
Sep. 30, 2016
USD ($)
customer
Revenues from External Customers and Long-Lived Assets [Line Items]      
Number of Reportable Segments | segment 1    
Net revenues to external customers $ 3,243,599 $ 8,230,659  
Long-Lived Asset $ 36,567,000   $ 8,852,000
Total Revenue [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Number of Customers | customer 0   0
Concentration risk, percentage 10.00%   10.00%
Net Revenues Less Than Five Percent [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk, percentage 5.00%    
Net Revenues Exceeding Ten Percent [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk, percentage 10.00%    
Cameroon [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers $ 891,000 [1] [2]  
South Africa [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers 636,000 [1] [2]  
Zimbabwe [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers [1] 516,000 826,000  
Brazil [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers [2] 4,755,000 [1]  
U.S. [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers 358,000 [1] 815,000  
Long-Lived Asset 35,767,000   $ 7,963,000
Malaysia [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers [2]  
Long-Lived Asset 715,000   796,000
U.K. [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers [2]  
Long-Lived Asset 85,000   $ 93,000
Other Countries [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenues to external customers $ 843,000 $ 1,835,000  
Customer One [Member] | Accounts Receivable [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Number of Customers | customer 1   1
Concentration risk, percentage 35.00%   49.00%
Customer One [Member] | Accounts Receivable and Other Long-Term Receivables [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Number of Customers | customer 1   1
Concentration risk, percentage 81.00%   85.00%
Three Customers [Member] | Total Revenue [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Number of Customers | customer 3 3  
Concentration risk, percentage 10.00% 10.00%  
[1] Countries exceeding 10 percent of total net revenues
[2] * Countries with less than 5 percent of total net revenues