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Note 15 - Share-Based Compensation Plans (Details Textual) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Oct. 31, 2022 USD ($) $ / shares shares | Oct. 31, 2021 USD ($) $ / shares shares | Oct. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 600,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value | $ | $ 0.2 | $ 4.8 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) | 9,575 |  | 0 |
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 | $ 16.46 | $ 8.82 | $ 25.34 |
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, Total | $ | $ 15.4 |  |  |
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 | $ | $ 10.3 | $ 7.7 | $ 2.8 |
Share-Based Payment Arrangement, Expense, after Tax | $ | $ 7.3 | $ 5.2 | $ 2.6 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 0 | 0 | 0 |
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 | $ | $ 0.1 | $ 0.2 | $ 0.4 |
Restricted Stock [Member] |  |  |  |
Share-based Compensation, Reverse of Previously Recognized Expense | $ |  |  | $ 2.4 |
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] | Nonemployee Director [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments |  | 3 |  |
Restricted Stock [Member] | Participants Without Service Requirement [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Participants Age (Year) | 60 years |  |  |
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) | 116,785 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 78.82% |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 3.04% |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% |  |  |
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) | 60,130 |  |  |
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% |  |  |
LTIP Shares [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | 17,023 |  |  |
Non Options [Member] |  |  |  |
Share-Based Payment Arrangement, Expense | $ | $ 10.2 | $ 7.4 | $ 2.4 |
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) | 49,484 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 63,159 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | 60,751 |  |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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