Pro Forma Information of Company as of Business Combination (Detail) (Ultrasonix, USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Ultrasonix
Business Acquisition [Line Items]
Net revenue	$ 141.4	$ 150.7	$ 251.5	$ 278.8
Net income	$ 19.3	$ 10.8	$ 14.9	$ 14.6
Net income per share, basic	$ 1.56	$ 0.88	$ 1.20	$ 1.19
Net income per share, diluted	$ 1.53	$ 0.86	$ 1.17	$ 1.16

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

+ Details

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

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