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Stock-Based Compensation (Details Textual) (USD $) | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended
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Oct. 31, 2012 | Oct. 31, 2011 | Oct. 31, 2010 | Jan. 11, 2012 | Oct. 31, 2012 Employee Stock [Member] Participant | Oct. 31, 2011 Stock Options [Member] | Oct. 31, 2012 Restricted Stock [Member] | Apr. 30, 2011 2005 Stock Incentive Plan [Member] | Oct. 31, 2012 2005 Stock Incentive Plan [Member] | Oct. 31, 2011 2005 Stock Incentive Plan [Member] | Oct. 31, 2010 2005 Stock Incentive Plan [Member] | Oct. 31, 2012 2011 Management Incentive Plan [Member] | Oct. 31, 2012 2011 Management Incentive Plan [Member] Directors | Apr. 30, 2011 2011 Management Incentive Plan [Member] | Apr. 30, 2011 2011 Management Incentive Plan [Member] Board Of Director Members For April Two Thousand Eleven Option Grants [Member] | Oct. 31, 2011 2011 Management Incentive Plan [Member] Board Of Director Members For April Two Thousand Eleven Option Grants [Member] | Oct. 31, 2011 2011 Management Incentive Plan [Member] Board Of Director Members For October Two Thousand Eleven Option Grants [Member] | Oct. 31, 2012 2011 Management Incentive Plan [Member] Board Of Director Members For October Two Thousand Eleven Option Grants [Member] | Oct. 31, 2012 2011 Management Incentive Plan [Member] Employee Stock [Member] | Apr. 30, 2011 2011 Management Incentive Plan [Member] Stock Options [Member] Board Of Director Members For April Two Thousand Eleven Option Grants [Member] | Oct. 31, 2011 2011 Management Incentive Plan [Member] Stock Options [Member] Board Of Director Members For October Two Thousand Eleven Option Grants [Member] | Oct. 31, 2012 2011 Management Incentive Plan [Member] Restricted Stock [Member]
Share-Based Compensation (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Weighted-Average Exercise Price | $ 21.82 |  |  |  |  |  |  |  |  |  | $ 19.20 |  |  |  |  |  | $ 21.80 |  |  |  |  |
Common stock shares authorized under ESPP |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  | 60,000 | 10,000 |
Common stock shares available for grant under ESPP |  |  |  |  | 474,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  | $ 7.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ESPP share based awards expiration month year |  |  |  |  | 2002-04 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees participating in ESPP |  |  |  |  | 84 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock shares purchased under ESPP |  |  |  |  | 279,000 |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted to each director | 70,000 |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |
Stock options vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year | 5 years |
Restricted stock closing price awarded to non employee director |  |  |  |  |  |  |  |  |  |  |  | $ 27.68 |  |  |  |  |  |  |  |  |  |
Term of vested stock options |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  | 5 years |  |  |  |  |
Market price of common stock at grant date |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21.82 |  | $ 21.80 |  |  |  |  |
Estimated fair market value of options |  |  |  |  |  |  |  |  | $ 300,000 | $ 700,000 | $ 700,000 |  | $ 1,000,000 |  |  | $ 200,000 |  | $ 100,000 |  |  |  |
Stock options total compensation cost, not yet recognized | 100,000 |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining service period for recognition of unrecognized compensation cost | 45 months |  |  |  |  | 60 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
weighted average remaining life of stock options |  |  |  |  |  |  |  |  | 5 years 2 months 12 days |  |  |  | 1 year 8 months 12 days |  |  |  |  |  |  |  |  |
Exercisable stock options, weighted-average remaining contractual term |  |  |  |  |  |  |  |  | 4 years 1 month 6 days |  |  |  | 7 months 6 days |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised |  |  |  |  |  |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted to non employee director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5000 shares |  |
Exercise price of stock options granted to non employee director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21.82 |  |
Stock option shares vested |  |  |  |  |  |  |  |  | 13,000 |  |  | 42,000 | 42,000 |  |  |  |  |  |  |  |  |
Number of non-employee directors |  |  |  |  |  |  |  |  |  |  |  |  | 12 |  |  |  |  |  |  |  |  |
Total restricted shares issued to Non-employee Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000
Stock compensation expense | $ 417,000 | $ 188,000 | $ 52,000 |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number | 11,000 |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares issued per Non employee director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c), d(2) -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. + Details
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- Definition 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. + 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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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -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. + Details
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- Definition 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. + References 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 + Details
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- Definition The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. + References 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph d(2) -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. + Details
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- Definition Identification of the company's securities issued in the transaction in which equity securities were issued to pay for goods or nonemployee services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 65 -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 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 5 -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 AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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