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EQUITY INCENTIVE PLAN (Schedule of Information about Outstanding Stock Options Vested and Expected to Vest) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2013
Options already vested and expected to vest
Number of outstanding options	180,081
Weighted average remaining contractual life (years)	7 years 2 months 5 days
Weighted average exercise price per share	$ 21.11
Intrinsic value of outstanding options	$ 1,606
Options currently exercisable
Number of outstanding options	111,281
Weighted average remaining contractual life (years)	4 years 9 months 26 days
Weighted average exercise price per share	$ 21.09
Intrinsic value of outstanding options	$ 1,017

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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 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.

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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