v2.4.0.6

Employee Benefit Plans (Equity Compensation Plans) - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified |  |  |  |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |
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Oct. 31, 2012 Stock Option | Oct. 31, 2011 Stock Option | Oct. 31, 2010 Stock Option | Oct. 31, 2009 Stock Option | Apr. 25, 2006 2005 Directors Plan | Oct. 31, 2012 2005 Directors Plan | May 23, 2005 2005 Directors Plan | Oct. 31, 2012 2005 Directors Plan Stock Option | Oct. 31, 2012 2005 Directors Plan Stock Option Minimum | Oct. 31, 2012 2005 Directors Plan Stock Option Maximum | Oct. 31, 2012 2005 Directors Plan Restricted Stock | Apr. 03, 2012 2006 Employee Equity Incentive Plan | Oct. 31, 2012 2006 Employee Equity Incentive Plan | Oct. 31, 2012 2006 Employee Equity Incentive Plan Stock Options | Oct. 31, 2012 2006 Employee Equity Incentive Plan Restricted Stock Units | Oct. 31, 2012 1994 Non-Employee Directors Stock Option Plan | Oct. 31, 2012 Other Assumed Stock Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation arrangement for options contractual term (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |
Additional reserved for future issuance under the 2006 Employee Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  |
Aggregate stock options outstanding |  |  |  |  |  |  |  |  |  |  |  | 123,649 |  |  |  |  |  | 10,200,000 |  |  |
Aggregate restricted stock award outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 57,451 |  |  |  | 3,900,000 |  |
Shares available for future grant | 7,352,000 | [1] | 5,911,000 | [1] | 2,606,000 | [1] | 6,703,000 | [1] |  |  |  |  |  |  |  |  | 7,400,000 |  |  |  |
Vesting period, (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 3 years | 4 years |  |  | 4 years |  |  |  |
Number of shares available contingent upon cancellation or expiration of prior plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |
Reserved for future issuance |  |  |  |  |  |  |  |  |  | 365,464 | 300,000 |  |  |  |  |  |  |  |  |  |
Shares increase number of shares reserved for future issuance under the 2005 Directors Plan |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock awards issued |  |  |  |  |  |  |  |  |  | 274,230 |  |  |  |  |  |  |  |  |  |  |
Aggregate grant date fair value of restricted stock awards |  |  |  |  |  |  |  |  |  | $ 6.2 |  |  |  |  |  |  |  |  |  |  |
Aggregate stock options granted under 2005 director plan |  |  |  |  |  |  |  |  |  |  |  | 123,649 |  |  |  |  |  |  |  |  |
Fair value of option shares granted |  |  |  |  |  |  |  |  |  |  |  | $ 3.3 |  |  |  |  |  |  |  |  |
Aggregate stock options outstanding under 1994 director plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 280,000 |
Shares assumed through acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500,000
Assumed shares remaining outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000
[1] | Excluding shares reserved for future issuance under the 2005 Directors Plan.

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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