Benefit Plans (Tables)

12 Months Ended

Oct. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Other Share-based Compensation, Activity [Table Text Block]

The following table summarizes our RSA and RSU activity for the year ended October 31, 2014:

			Weighted- Average
Restricted Stock Awards and Units	Shares		Price
Outstanding at October 31, 2013	5,036,104		$	1.20
Granted	1,410,479		$	2.39
Vested	(1,654,775	)	$	1.36
Forfeited	(67,728	)	$	1.24
Outstanding at October 31, 2014	4,724,080		$	1.49

Schedule of Assumptions Used [Table Text Block]

The fair value of stock options is estimated on the grant date using the Black-Scholes option valuation model and the following weighted-average assumptions:

	2014		2013		2012
Expected life (in years)	7.0		7.0		7.0
Risk free interest rate	2.3	%	1.2	%	1.6	%
Volatility	81.1	%	76.5	%	75.5	%
Dividends yield	—	%	—	%	—	%

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

Share-based compensation was reflected in the consolidated statements of operations as follows:

	2014		2013		2012
Cost of revenues	$	751	$	584	$	587
General and administrative expense	1,718		1,325		1,182
Research and development expense	436		308		280
Total share-based compensation	$	2,905	$	2,217	$	2,049

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes our stock option activity for the year ended October 31, 2014:

			Weighted- Average Option
Options	Shares		Price
Outstanding at October 31, 2013	3,181,464		$	6.42
Granted	146,841		$	2.42
Canceled	(300,225	)	$	12.18
Outstanding at October 31, 2014	3,028,080		$	5.66

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The following table summarizes information about stock options outstanding and exercisable at October 31, 2014:

	Options Outstanding				Options Exercisable
		Weighted Average	Weighted Average			Weighted Average
Range of	Number	Remaining	Exercise		Number	Exercise
Exercise Prices	outstanding	Contractual Life	Price		exercisable	Price
$0.26 — $5.10	1,367,028	7.0	$	1.89	1,293,606	$	1.86
$5.11 — $9.92	1,218,404	2.4	$	8.09	1,218,404	$	8.09
$9.93 — $14.74	442,648	1.5	$	10.60	442,648	$	10.60
	3,028,080	4.3	$	5.66	2,954,658	$	5.74