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v2.4.0.8

Schedule of Change in Retained Earnings (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014 | Jan. 31, 2013
Retained Earnings Adjustments [Line Items] |  |  |  |
Beginning Balance |  |  | $ 953,740 |
Net income | 16,192 | 19,896 | 57,300 | 50,884
Dividends paid |  |  | (77,800) |
Ending Balance | $ 933,240 |  | $ 933,240 |

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