Nature of Business and Basis of Presentation (Tables)

12 Months Ended

Oct. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Percent of customer consolidated revenues [Table Text Block]

The percent of consolidated revenues from each customer for the years ended October 31, 2016, 2015 and 2014, respectively, are presented below.

	2016		2015		2014
POSCO Energy	48	%	67	%	69	%
The United Illuminating Company	10	%	14	%	9	%
Department of Energy	8	%	5	%	4	%
Dominion Bridgeport Fuel Cell, LLC	6	%	3	%	3	%
BioFuels Energy, LLC	6	%	—	%	—	%
Total	78	%	89	%	85	%