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Stock-Based Benefit Plans (Details Textual) (USD $) | 12 Months Ended |  | 12 Months Ended |  | 3 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended |  |  |  | 12 Months Ended
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Oct. 31, 2012 | Oct. 31, 2011 | Oct. 31, 2010 | Dec. 19, 2008 | Oct. 31, 2010 Options with extended period [Member] | Oct. 31, 2012 Employee Stock Option [Member] | Oct. 31, 2011 Employee Stock Option [Member] | Oct. 31, 2010 Employee Stock Option [Member] | Oct. 31, 2012 Performance Based Restricted Stock Units [Member] | Dec. 20, 2011 Performance Based Restricted Stock Units [Member] | Jul. 31, 2012 Stock Price Based Restricted Stock Units [Member] | Oct. 31, 2012 Stock Price Based Restricted Stock Units [Member] | Oct. 31, 2011 Stock Price Based Restricted Stock Units [Member] | Oct. 31, 2010 Stock Price Based Restricted Stock Units [Member] | Dec. 20, 2011 Stock Price Based Restricted Stock Units [Member] | Dec. 20, 2010 Stock Price Based Restricted Stock Units [Member] | Dec. 21, 2009 Stock Price Based Restricted Stock Units [Member] | Oct. 31, 2012 Non Performance Based Restricted Stock Units [Member] | Oct. 31, 2011 Non Performance Based Restricted Stock Units [Member] | Oct. 31, 2010 Non Performance Based Restricted Stock Units [Member] | Dec. 20, 2011 Non Performance Based Restricted Stock Units [Member] | Dec. 20, 2010 Non Performance Based Restricted Stock Units [Member] | Dec. 21, 2009 Non Performance Based Restricted Stock Units [Member] | Oct. 31, 2012 Restricted Stock Units in Lieu of Compensation [Member] | Oct. 31, 2011 Restricted Stock Units in Lieu of Compensation [Member] | Oct. 31, 2010 Restricted Stock Units in Lieu of Compensation [Member] | Oct. 31, 2009 Restricted Stock Units in Lieu of Compensation [Member] | Oct. 31, 2012 Employee stock purchase plan [Member] | Oct. 31, 2012 Active plans [Member] Employee Stock Option [Member] | Oct. 31, 2012 Active plans [Member] Stock Option Non Employee Director [Member] | Oct. 31, 2012 Inactive Plans [Member] Employee Stock Option [Member] | Oct. 31, 2012 Inactive Plans [Member] Stock Option Non Employee Director [Member] | Oct. 31, 2012 Employees including officers [Member] | Oct. 31, 2012 Nonemployee directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock incentive plans | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  |  |  |  |  |  |  |  |  | 506,000 | 706,000 | 400,000 |  |  |  | 137,764 | 30,994 | 19,663 |  |  |  | 38,000 | 46,000 | 56,000 |  |  |  |  |  |  |  |
Stock Based Benefit Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 5,489,000 | 6,712,000 | 8,038,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of Stock Option Granted under Stock Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  | 10 years |  |  |
Stock based expense recognized | $ 15,575,000 | $ 12,548,000 | $ 9,689,000 |  | $ 552,000 | $ 7,411,000 | $ 8,626,000 | $ 9,332,000 | $ 3,953,000 |  |  | $ 2,887,000 | $ 3,701,000 | $ 2,121,000 |  |  |  | $ 156,000 | $ 144,000 | $ 138,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options under Extended Exercise Period |  |  | 175,813 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term |  |  |  |  |  | 4 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term |  |  |  |  |  | 3 years 7 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  |  |  |  |  |  |  |  |  |  | 118,800 | 0 | 306,000 | 200,000 |  |  |  | 107,820 | 15,497 | 19,663 |  |  |  |  |  |  | 62,051 |  |  |  |  |  |  |
Discounted Market Price of Common Stock on Specified Offering Dates Subject to Restrictions under Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |  |  |
Minimum percentage of units issued to the recipients of the base award |  |  |  |  |  |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum percentage of units issued to the recipients of the base award |  |  |  |  |  |  |  |  | 110.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of consecutive trading days |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of issuance of stock price based RSU |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized value of stock compensation | 14,200,000 | 12,700,000 | 11,100,000 |  |  | 7,200,000 |  |  | 3,636,000 |  |  | 2,042,000 | 4,929,000 | 3,636,000 |  |  |  | 1,326,000 | 379,000 | 224,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  | 4 years |  |  |  |  | 4 years | 2 years | 4 years | 2 years |  |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  |  | 2 years 5 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discounted Market Price of Common Stock on Specified Offering Dates Subject to Restrictions under Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |
Shares Reserved for Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |
Closing Price of Company Common Stock at Issuance Date |  |  |  | $ 21.70 |  |  |  |  |  | $ 20.50 |  |  |  |  |  | $ 19.32 | $ 18.38 |  |  |  | $ 20.50 | $ 19.32 | $ 18.38 |  |  |  |  |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance | 5,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 594,000 |  |  |  |  |  |
Salary Deferral Charged to Selling General and Administrative Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130,000 |  |  |  |  |  |  |
Stock Based Benefit Plans (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued under stock-based benefit plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,982 | 8,975 | 2,749 |  |  |  |  |  |  |  |
Percentage increases over closing price |  |  |  |  |  |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
gross value of stock awarded related to restricted stock units |  |  |  |  |  |  |  |  |  |  | 5,934,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross shares awarded related to restricted stock |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares withheld for income taxes on restricted shares issued |  |  |  |  |  |  |  |  |  |  | 2,409,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares withheld for income taxes related to share issued for RSU |  |  |  |  |  |  |  |  |  |  | 81,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | $ 8,096,000 | $ 8,102,000 | $ 22,000 |  |  |  |  |  |  |  | $ 3,525,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock incentive plan inactive - outstanding grants | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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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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