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Accounts Receivable (Details) (USD $)
Jul. 31, 2014
Oct. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Government Contract Receivable $ 1,276,000 $ 786,000
Government Contract Receivable, Unbilled Amounts 2,756,000 639,000
U.S. Government accounts receivable total 4,032,000 [1] 1,425,000
Contract Receivable 5,769,000 17,344,000
Unbilled Contracts Receivable 29,754,000 30,347,000
Commercial Customers accounts receivable 35,523,000 47,691,000
Accounts Receivable, Net, Current 39,555,000 49,116,000
Allowance for Doubtful Accounts Receivable, Current 60,000 10,000
POSCO Energy [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Related Parties, Current 12,600,000 17,400,000
Government [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Government Contract Receivable $ 1,600,000  
[1] Total U.S. Government accounts receivable outstanding as of July 31, 2014 is $1.6 million.