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Defined Benefit Pension Plans - Additional Information (Detail) (USD $)	Jul. 31, 2014	Jul. 31, 2013
Compensation And Retirement Disclosure [Abstract]
Company expected contributions	$ 0	$ 0

X

- Details

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X

- Definition

Amount of benefits expected to be paid in the remainder of the fiscal year following the latest fiscal year ended from a defined benefit plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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