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Note 15 (Detail) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2012 | Apr. 30, 2012 | Jul. 31, 2011 | Jul. 31, 2012 | Jul. 31, 2011
Common Stock Dividends, Percent of Increase from Class A to Class B | 110.00% |  |  | 110.00% |
Stock Issued During Period, Shares, New Issues (in Shares) |  | 25,000,000 |  |  |
Sale of Stock, Price Per Share (in Dollars per share) |  | $ 2.00 |  |  |
Stock Issued During Period, Value, New Issues (in Dollars) |  | $ 47,300,000 |  | $ 47,250,000 |
Face Amount of Debt Repurchased (in Dollars) |  | 75,400,000 |  |  |
Stock Issued (in Dollars) | 5,379,383 |  |  | 8,443,713 |
Gains (Losses) on Extinguishment of Debt (in Dollars) | 6,230,000 |  | (1,391,000) | 57,966,000 | (3,035,000)
Shareholder Ownership Percentage | 4.90% |  |  | 4.90% |
Shareholder Ownership, Percentage of Increase | 50.00% |  |  | 50.00% |
Number of Rights | 1 |  |  | 1 |
Shareholder, Percent of Stock Acquired | 4.90% |  |  | 4.90% |
Shareholders, Pre-existing Ownership Percentage | 5.00% |  |  | 5.00% |
Shareholders, Current Ownership Percentage | 5.00% |  |  | 5.00% |
Shareholders Ownership Percentage on Transfers | 5.00% |  |  | 5.00% |
Shareholders, Ownership Percentage Threshold | 5.00% |  |  | 5.00% |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in Shares) | 4,000,000 |  |  | 4,000,000 |
Treasury Stock, Shares, Acquired (in Shares) |  |  |  | 100,000 |
Stock Repurchase Program, Number of Shares Repurchased (in Shares) | 3,500,000 |  |  | 3,500,000 |
Common Class A [Member] |  |  |  |  |
Number of Votes | 1 |  |  | 1 |
Common Class B [Member] |  |  |  |  |
Number of Votes | 10 |  |  | 10 |
Minimum [Member] |  |  |  |  |
Shareholder Ownership Percentage | 5.00% |  |  | 5.00% |
Bondholder Exchange [Member] | The 6.25% 2016 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) | 7,800,000 |  |  |  |
Bondholder Exchange [Member] | The 7.5% 2016 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) | 4,000,000 |  |  |  |
Bondholder Exchange [Member] | The 8.625% 2017 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) | 9,200,000 |  |  |  |
Bondholder Exchange [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) | 21,000,000 |  |  | 33,200,000 |
Gains (Losses) on Extinguishment of Debt (in Dollars) | 5,800,000 |  |  | 9,300,000 |
The 6.25% 2016 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) |  |  |  | 7,800,000 |
Debt Instrument, Interest Rate, Stated Percentage | 6.25% |  |  | 6.25% |
The 7.5% 2016 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) |  |  |  | 4,000,000 |
Debt Instrument, Interest Rate, Stated Percentage | 7.50% |  |  | 7.50% |
The 8.625% 2017 Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) |  |  |  | 18,300,000 |
Debt Instrument, Interest Rate, Stated Percentage | 8.625% |  |  | 8.625% |
The 12.072% Notes [Member] |  |  |  |  |
Face Amount of Debt Repurchased (in Dollars) |  |  |  | $ 3,100,000 |
Debt Instrument, Interest Rate, Stated Percentage | 12.072% |  |  | 12.072% |

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