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Note 15 - Common Stock (Details Textual) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2023 USD ($) shares | Jan. 31, 2023 USD ($) | Jul. 31, 2022 shares | Jul. 31, 2023 USD ($) $ / shares shares | Jul. 31, 2022 shares | Sep. 01, 2022 USD ($) | Jan. 11, 2018 | Aug. 15, 2008
Common Stock Dividends Percent of Increase from Class A to Class B | 110.00% |  |  | 110.00% |  |  |  |
Conversion of Stock From Class B to Class A Conversion Ratio | 1 |  |  |  |  |  |  |
Shareholder Ownership Percentage of Increase |  |  |  |  |  |  | 50.00% |
Treasury Stock, Value, Acquired, Cost Method |  | $ 4.8 |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Shareholder Ownership Percentage |  |  |  |  |  |  | 5.00% |
Common Class A [Member] |  |  |  |  |  |  |  |
Common Stock Voting Rights Votes per Share Number | 1 |  |  |  |  |  |  |
Shareholder Ownership Percentage |  |  |  |  |  |  |  | 4.90%
Number of Rights |  |  |  |  |  |  |  | 1
Shareholders Pre Existing Ownership Percentage |  |  |  |  |  |  | 5.00% |
Shareholders Current Ownership Percentage |  |  |  |  |  |  | 5.00% |
Shareholders Ownership Percentage on Transfers |  |  |  |  |  |  | 5.00% |
Shareholders Ownership Percentage Threshold |  |  |  |  |  |  | 5.00% |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  | $ 50.0 |  |
Treasury Stock, Shares, Acquired (in shares) | shares | 0 |  | 0 | 118,478 | 0 |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  | $ 4.8 |  |  |  |
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares |  |  |  | $ 40.51 |  |  |  |
Stock Repurchase Program, Remaining Amount of Shares Authorized to be Repurchased | $ 33.0 |  |  | $ 33.0 |  |  |  |
Common Class B [Member] |  |  |  |  |  |  |  |
Common Stock Voting Rights Votes per Share Number | 10 |  |  |  |  |  |  |

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- Definition Number of rights which, under the company's shareholder rights plan, was distributed for each share of Class A Common Stock and Class B Common Stock outstanding at the close of business on August 15, 2008. + References No definition available. + Details
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- Definition Percentage of ownership of shareholders for which if they increased their collevtive ownership of the aggregate amount of our outstanding shares by more than 50 percentage points over a defined period of time, under Section 382 of the Internal Revenue Code, would limit our ability to use NOLs and built-in losses if there was an "ownership change". + References No definition available. + Details
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- Definition Percentage of increase over a defined period of time of percentage of collective ownership of shareholders of 5% or more, which under Section 382 of the Internal Revenue Code would limit our ability to use NOLs and built-in losses if there was an "ownership change". + References No definition available. + Details
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- Definition Percentage of common stock ownership of which current stockholders exceed, per the company's Certificate of Incorporation would trigger a restriction of any direct or indirect transfer if the effect of the transaction would be to increase the direct or indirect ownership of the company's stock by any person or public group over this percentage. + References No definition available. + Details
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