Stock-Based Compensation (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Oct. 31, 2012	Jul. 31, 2012
Stock option activity, related to 2011 Management Incentive Plan
Granted, Number of Shares	70
Granted, Weighted-Average Exercise Price	$ 21.82
Granted, Weighted-Average Fair Value	$ 4.15
Forfeited, Number of Shares	(5)
Forfeited, Weighted-Average Exercise Price	$ 21.82
2011 Management Incentive Plan [Member]
Stock option activity, related to 2011 Management Incentive Plan
Outstanding, Number of Shares, beginning balance	65
Outstanding, Number of Shares, ending balance	50
Outstanding, Weighted-Average Exercise Price, ending balance	$ 21.82
Outstanding, Aggregate Intrinsic Value	$ 94
Exercised, Number of Shares	(15)
Exercisable, Weighted-Average Exercise Price	$ 21.82
Exercisable, Aggregate Intrinsic Value		$ 79

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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

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