Earnings per Share and Stock-based Compensation - Schedule of Changes in Shares under Option, Excluding Performance Based Options (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
Apr. 30, 2015
Shares
Outstanding, October 31, 2014 (shares)	6,817,609
Granted (shares)	275,000
Exercised (shares)	0
Canceled (shares)	(765,667)
Outstanding, April 30, 2015 (shares)	6,326,942
Options exercisable, April 30, 2015 (shares)	5,927,274
Weighted Average Price
Outstanding, October 31, 2014 (usd per share)	$ 4.52
Granted (usd per share)	$ 1.70
Exercised (usd per share)	$ 0.00
Canceled (usd per share)	$ 5.87
Outstanding, April 30, 2015 (usd per share)	$ 4.24
Options exercisable, April 30, 2015 (usd per share)	$ 4.12
Outstanding, Weighted Average Life, ending balance	4 years 7 months 14 days
Options exercisable, Weighted Average Life, April 30, 2015	4 years 4 months 30 days
Outstanding, Aggregate Intrinsic Value, ending balance	$ 14
Options exercisable, April 30, 2015, Aggregate Intrinsic Value	$ 14

Earnings per Share and Stock-based Compensation - Schedule of Changes in Shares under Option, Excluding Performance Based Options (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified

6 Months Ended

Apr. 30, 2015

Shares

Outstanding, October 31, 2014 (shares)

6,817,609us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

Granted (shares)

275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

Exercised (shares)

0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised

Canceled (shares)

(765,667)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

Outstanding, April 30, 2015 (shares)

6,326,942us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

Options exercisable, April 30, 2015 (shares)

5,927,274us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

Weighted Average Price

Outstanding, October 31, 2014 (usd per share)

$ 4.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

Granted (usd per share)

$ 1.70us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

Exercised (usd per share)

$ 0.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

Canceled (usd per share)

$ 5.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

Outstanding, April 30, 2015 (usd per share)

$ 4.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

Options exercisable, April 30, 2015 (usd per share)

$ 4.12us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

Outstanding, Weighted Average Life, ending balance

4 years 7 months 14 days

Options exercisable, Weighted Average Life, April 30, 2015

4 years 4 months 30 days

Outstanding, Aggregate Intrinsic Value, ending balance

$ 14us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

Options exercisable, April 30, 2015, Aggregate Intrinsic Value

$ 14us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

Weighted average price of options that were either forfeited or expired.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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