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EARNINGS PER SHARE - Additional Information (Detail) - shares | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 | Oct. 31, 2017
Class A Common Stock |  |
Class of Stock [Line Items] |  |
Percentage of shares outstanding used in two class method calculation | 40.00% |
Class B Common Stock |  |
Class of Stock [Line Items] |  |
Percentage of shares outstanding used in two class method calculation | 60.00% |
Board Of Director Authorized |  |
Class of Stock [Line Items] |  |
Number of shares authorized to be purchased (shares) | 4,703,487 |
Stock Repurchase Committee Authorized |  |
Class of Stock [Line Items] |  |
Repurchase of common stock (shares) | 0 | 2,000

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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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