Accounts Receivable (Details) (USD $)	Oct. 31, 2012	Oct. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
U.S. Government Amount Billed	$ 20,000	$ 52,000
U.S. Government Unbilled Recoverable Costs	890,000	1,012,000
U.S. Government Accounts Receivable Total	910,000	1,064,000
Commercial Customers Amount Billed	18,786,000	10,330,000
Commercial Customers Unbilled Recoverable Costs	6,288,000	10,556,000
Commercial Customers Accounts Receivable Total	25,074,000	20,886,000
Accounts Receivable, Net, Current	25,984,000	21,950,000
Allowance for Doubtful Accounts Receivable, Current	586,000	555,000
POSCO [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Related Parties, Current	$ 18,100,000	$ 8,000,000