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Note 15 - Common Stock (Details Textual) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 30, 2016 USD ($) shares | Apr. 30, 2016 USD ($) shares | Dec. 05, 2008 | Aug. 15, 2008 | Aug. 04, 2008 | Jul. 03, 2001 shares
Common Class A [Member] |  |  |  |  |  |
Stock Repurchased During Period, Shares | 0 | 0 |  |  |  |
Common Stock Voting Rights Votes per Share Number |  | 1 |  |  |  |
Shareholder Ownership Percentage |  |  |  | 4.90% |  |
Number of Rights |  |  |  | 1 |  |
Shareholder Percent of Stock Acquired |  |  |  | 4.90% |  |
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 |  |  |  |  |  | 4,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ | $ 0.5 | $ 0.5 |  |  |  |
Common Class B [Member] |  |  |  |  |  |
Common Stock Voting Rights Votes per Share Number |  | 10 |  |  |  |
Minimum [Member] |  |  |  |  |  |
Shareholder Ownership Percentage |  |  |  |  | 5.00% |
Common Stock Dividends Percent of Increase from Class A to Class B | 110.00% | 110.00% |  |  |  |
Shareholder Ownership Percentage of Increase |  |  |  |  | 50.00% |

X
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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 outstanding Class A Common Stock acquired by any person or group without approval of Board of Directors, that would cause a triggering event under the Company's Rights Plan, causing significant dilution in the voting power of such person or group. + 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://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 Reference 2: 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=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 Reference 4: 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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