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Note 15 - Common Stock (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2015 USD ($) shares | Jul. 31, 2015 USD ($) shares | Dec. 05, 2008 | Aug. 15, 2008 | Aug. 04, 2008 | Jul. 03, 2001 shares
Note 15 - Common Stock (Details) [Line Items] |  |  |  |  |  |
Common Stock Dividends, Percent of Increase from Class A to Class B | 110.00% | 110.00% |  |  |  |
Shareholder Ownership, Percentage of Increase |  |  |  |  | 50.00% |
Common Class A [Member] |  |  |  |  |  |
Note 15 - Common Stock (Details) [Line Items] |  |  |  |  |  |
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 (in Shares) |  |  |  |  |  | 4,000,000
Stock Repurchased During Period, Shares (in Shares) | 0 | 0 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars) | $ | $ 0.5 | $ 0.5 |  |  |  |
Common Class B [Member] |  |  |  |  |  |
Note 15 - Common Stock (Details) [Line Items] |  |  |  |  |  |
Common Stock Voting Rights Votes Per Share Number |  | 10 |  |  |  |
Minimum [Member] |  |  |  |  |  |
Note 15 - Common Stock (Details) [Line Items] |  |  |  |  |  |
Shareholder Ownership Percentage |  |  |  |  | 5.00% |

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- Definition Percentage of ownership of shareholders for which if they increased their collective 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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