Accounts Receivable (Details) (USD $)	Apr. 30, 2014		Oct. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Government Contract Receivable	$ 1,805,000		$ 786,000
Government Contract Receivable, Unbilled Amounts	1,369,000		639,000
U.S. Government accounts receivable total	3,174,000	[1]	1,425,000
Contract Receivable	15,121,000		17,344,000
Unbilled Contracts Receivable	16,440,000		30,347,000
Commercial Customers accounts receivable	31,561,000		47,691,000
Accounts Receivable, Net, Current	34,735,000		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	21,700,000		17,400,000
Dominion Bridgeport FuelCell Park [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled Contracts Receivable	0		17,800,000
Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Government Contract Receivable	800,000
POSCO Energy [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled Contracts Receivable	$ 8,100,000		$ 6,700,000

[1] Total U.S. Government accounts receivable outstanding at April 30, 2014 is $0.8 million.