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Losses Due to Repurchases under Repurchase Agreements (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2014 | Apr. 30, 2013 | Apr. 30, 2014 | Apr. 30, 2013
Loss Contingencies [Line Items] |  |  |  |
Cost of units repurchased | $ 598 | $ 3,650 | $ 1,047 | $ 5,778
Realization of units resold | 526 | 3,290 | 916 | 5,059
Losses due to repurchase | $ 72 | $ 360 | $ 131 | $ 719

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- Definition Realization of units resold + References No definition available. + Details
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- Details
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