Nature of Business and Basis of Presentation (Tables)

6 Months Ended

Apr. 30, 2013

Nature of Business and Basis of Presentation [Abstract]

Percent of customer consolidated revenues [Table Text Block]

The percent of consolidated revenues from each customer is presented below.

	Three Months Ended April 30,				Six Months Ended April 30,
	2013		2012		2013		2012
POSCO Energy	63	%	83	%	66	%	72	%
Dominion Bridgeport Fuel Cell, LLC	21	%	—	%	19	%	—	%
U.S. Government (primarily the Department of Energy)	6	%	8	%	6	%	6	%
Combined	90	%	91	%	91	%	78	%