Stock-Based Compensation - Stock Option Activity, Related to Incentive Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Shares	0		0
2005 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of Shares, beginning balance	17,000	27,000	35,000
Exercised, Number of Shares	(7,000)	(10,000)	(8,000)
Outstanding, Number of Shares, ending balance	10,000	17,000	27,000
Exercisable, Number of Shares	10,000
Outstanding, Weighted-Average Exercise Price, beginning balance	$ 17.22	$ 15.79	$ 15.16
Exercised, Weighted-Average Exercise Price	15.81	13.25	12.84
Outstanding, Weighted-Average Exercise Price, ending balance	18.28	$ 17.22	$ 15.79
Exercisable, Weighted-Average Exercise Price	$ 18.28
Outstanding, Aggregate Intrinsic Value	$ 514
Exercisable, Aggregate Intrinsic Value	$ 514
Weighted-average remaining life of stock options	3 years 2 months 12 days
Exercisable stock options, weighted-average remaining contractual term	3 years 2 months 12 days
2011 Management Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of Shares, beginning balance	20,000	20,000	50,000
Granted, Number of Shares			10,000
Exercised, Number of Shares	(6,000)		(40,000)
Outstanding, Number of Shares, ending balance	14,000	20,000	20,000
Exercisable, Number of Shares	6,000
Outstanding, Weighted-Average Exercise Price, beginning balance	$ 22.64	$ 22.64	$ 21.82
Granted, Weighted-Average Exercise Price			23.48
Exercised, Weighted-Average Exercise Price	21.80		21.82
Outstanding, Weighted-Average Exercise Price, ending balance	23.00	$ 22.64	$ 22.64
Exercisable, Weighted-Average Exercise Price	$ 22.92
Outstanding, Aggregate Intrinsic Value	$ 397
Exercisable, Aggregate Intrinsic Value	$ 171
Weighted-average remaining life of stock options	5 years 3 months 18 days
Weighted-average remaining life of exercisable options	5 years 3 months 18 days

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

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

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Number of options outstanding, including both vested and non-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 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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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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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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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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Number of share options (or share units) exercised during the current period.

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