SHARE-BASED PAYMENTS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Oct. 31, 2012 Y
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation related to stock options	$ 1.7
Weighted average period of stock options	1.8
Unrecognized share-based compensation to nonvested stock	$ 0.5
Weighted average period of nonvested stock	1 year 2 months 18 days

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period Type:	duration