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Earnings Per Share - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 15 Months Ended
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014
Class of Stock [Line Items] |  |  |
Number of shares authorized to be purchased | 4,000,000 |  | 4,000,000
Total cost of the shares repurchased |  |  | $ 0.1
Shares repurchased of common stock | 3,184,272 |  | 3,184,272
Antidilutive stock option | 0 | 0 |
Class A Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Calculation of EPS | (i) multiply 40 percent times the average Class A shares outstanding, then divide that amount by the product of 40 percent of the average Class A shares outstanding plus 60 percent of the average Class B shares outstanding to get a percentage, (ii) undistributed net income divided by the average Class A shares outstanding, (iii) multiply item (i) by item (ii), (iv) add item (iii) to the Class A cash dividend. Diluted shares are factored into the Class A calculation. |  |
Percentage of shares outstanding used in two class method calculation | 40.00% |  |
Cumulative dividends per share | $ 0.01 |  |
Common stock dividend per share | $ 0.01 |  |
Cumulative dividend period in arrear for voting right | 4 |  |
Repurchase of common stock | 0 | 0 |
Shares repurchased of common stock | 1,425,452 |  | 1,425,452
Class B Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Calculation of EPS | (i) multiply 60 percent times the average Class B shares outstanding, then divide that amount by the product of 40 percent of the average Class A shares outstanding plus 60 percent of the average Class B shares outstanding to get a percentage, (ii) undistributed net income divided by the average Class B shares outstanding, (iii) multiply item (i) by item (ii), (iv) add item (iii) to the Class B cash dividend. Class B diluted EPS is identical to Class B basic EPS. |  |
Percentage of shares outstanding used in two class method calculation | 60.00% |  |
Non-Cumulative dividends per share | $ 0.005 |  |
Common stock dividend per share | $ 0.015 |  |
Repurchase of common stock | 0 | 0 |
Shares repurchased of common stock | 1,758,820 |  | 1,758,820

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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 -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: 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 4: 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 + Details
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