Quarterly report pursuant to Section 13 or 15(d)

Royalty and licensing income (Detail)

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Royalty and licensing income (Detail) (Life Sciences [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Life Sciences [Member]
   
Royalty Revenue $ 1.9 $ 1.9