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Note 15 - Common Stock (Details Textual) shares in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2021 shares | Apr. 30, 2021 shares | Jan. 11, 2018 | Aug. 15, 2008 | Jul. 03, 2001 shares
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% |  |
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, Number of Shares Authorized to be Repurchased (in shares) |  |  |  |  | 200
Stock Repurchased During Period, Shares (in shares) | 0 | 0 |  |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares) | 22 | 22 |  |  |
Common Class B [Member] |  |  |  |  |
Common Stock Voting Rights Votes per Share Number |  | 10 |  |  |

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- Definition Percentage of the corresponding regular cash dividend payable on a share of Class A Common Stock to the amount of any regular cash dividend payable on a share of Classs B Common Stock + References No definition available. + Details
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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 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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- Definition Percentage of common stock ownership which, 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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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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