Benefit Plans Employee stock purchase plan (Tables)

12 Months Ended

Oct. 31, 2013

Employee Stock Purchase Plan [Abstract]

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]

ESPP activity for the fiscal year ended October 31, 2013 was as follows:

	Number of
Options	Shares
Balance at October 31, 2012	774,373
Issued @ $0.79	(224,789	)
Outstanding at October 31, 2013	549,584

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

The fair value of shares under the ESPP was determined at the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:

	2013		2012		2011
Expected life (in years)	0.5		0.5		0.5
Risk free interest rate	15.0	%	7.0	%	0.2	%
Volatility	75.0	%	92.0	%	90.5	%
Dividends yield	—	%	—	%	—	%