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Earnings Per Share - Additional Information (Detail) - shares | 12 Months Ended | 36 Months Ended
--- | --- | ---
Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2016
Class of Stock [Line Items] |  |  |  |
Number of shares authorized to be purchased (shares) | 4,000,000 |  |  | 4,000,000
Repurchase of common stock (shares) |  |  |  | 0
Shares repurchased of common stock (shares) | 3,294,513 |  |  | 3,294,513
Antidilutive stock option (shares) | 0 | 0 | 0 |
Class A Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Percentage of shares outstanding used in two class method calculation | 40.00% |  |  |
Voting rights | The Class A Common Stock has no voting rights unless four quarterly cumulative dividends upon the Class A Common Stock are in arrears. |  |  |
Shares repurchased of common stock (shares) | 1,425,452 |  |  | 1,425,452
Class B Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Percentage of shares outstanding used in two class method calculation | 60.00% |  |  |
Voting rights | The Class B Common Stock has full voting rights. |  |  |
Number of shares authorized to be purchased (shares) | 110,241 |  |  | 110,241
Shares repurchased of common stock (shares) | 1,869,061 |  |  | 1,869,061

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 + Details
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