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Note 15 - Share-based Compensation Plans (Details Textual) $ / shares in Units, $ in Thousands | 12 Months Ended
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Oct. 31, 2023 USD ($) $ / shares shares | Oct. 31, 2022 USD ($) $ / shares shares | Oct. 31, 2021 USD ($) $ / shares shares | Oct. 31, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 300,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 0 | 0 | 0 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value | $ | $ 200 | $ 200 | $ 4,800 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares | $ 6.29 | $ 16.46 | $ 8.82 |
Share-based Compensation Arrangement by Share-based Payment Award, Participants Years of Service (Year) | 15 years |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ | $ 16,200 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 7 months 6 days |  |  |
Share-Based Payment Arrangement, Expense | $ | $ 14,200 | $ 10,300 | $ 7,700 |
Share-Based Payment Arrangement, Expense, after Tax | $ | $ 11,400 | 7,300 | 5,200 |
Nonemployee Director [Member] |  |  |  |
Number of Directors | 6 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Post-vesting Holding Period (Year) | 2 years |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments | 4 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 10 years |  |  |
Share-Based Payment Arrangement, Expense | $ | $ 27 | $ 100 | $ 200 |
Share-Based Payment Arrangement, Option [Member] | Nonemployee Director [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments | 3 |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 2 years |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche One [Member] | Nonemployee Director [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 1 year |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Two [Member] | Nonemployee Director [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 2 years |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 4 years |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Three [Member] | Nonemployee Director [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Four [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 5 years |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | 51,296 |  |  |
Restricted Stock Units (RSUs) [Member] | Officers and Associates [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments | 4 |  |  |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche One [Member] | Officers and Associates [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 1 year |  |  |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Two [Member] | Officers and Associates [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 2 years |  |  |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Three [Member] | Officers and Associates [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Four [Member] | Officers and Associates [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 4 years |  |  |
Restricted Stock [Member] | Participants With Service Requirement [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Participants Age (Year) | 58 years |  |  |
Restricted Stock [Member] | Participants Without Service Requirement [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Participants Age (Year) | 60 years |  |  |
Time-based Share Units [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred (in shares) | 27,686 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 63,275 |  |  |
Performance-based Performance Share Units (PSUs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments |  |  |  | 4
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred (in shares) | 149,693 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 66.66% | 78.82% | 112.44% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 4.54% | 3.04% | 0.16% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00% | 0.00% |
Performance-based Performance Share Units (PSUs) [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 2 years
Performance-based Performance Share Units (PSUs) [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 3 years
Performance-based Performance Share Units (PSUs) [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 4 years
Performance-based Performance Share Units (PSUs) [Member] | Share-Based Payment Arrangement, Tranche Four [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 5 years
Performance-based Performance Share Units (PSUs) [Member] | Share-Based Payment Arrangement, Cliff Vesting [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | 3 years | 3 years |
LTIP Shares [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 75.29% | 104.16% | 112.92% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 4.19% | 0.67% | 0.16% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | 32,671 |  |  |
LTIP Shares [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  |
LTIP Shares [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 4 years |  |  |
LTIP Shares [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 5 years |  |  |
Market Stock Units [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 0 | 0 | 0 |
Share-based Compensation Arrangement By Share-based Compensation Award Fair Value Measurement Period (Day) | 60 days |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | 43,268 |  |  |
Market Stock Units [Member] | Minimum [Member] |  |  |  |
Percentage of Target Number of Shares Covered by MSU Awards | 0.00% |  |  |
Market Stock Units [Member] | Maximum [Member] |  |  |  |
Percentage of Target Number of Shares Covered by MSU Awards | 200.00% |  |  |
Market Stock Units [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments | 4 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 50.00% |  |  |
Performance Based MSUs [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments | 4 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 50.00% |  |  |
RSUs and Performance Units [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value | $ | $ 10,400 | $ 9,600 | $ 9,200 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Grant Date Fair Value | $ | 25,200 | 15,600 | 13,700 |
Non Options [Member] |  |  |  |
Share-Based Payment Arrangement, Expense | $ | $ 14,200 | $ 10,200 | $ 7,400 |

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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