Annual report pursuant to Section 13 and 15(d)

Licensing and Supply Agreement (Detail)

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Licensing and Supply Agreement (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jul. 31, 2012
Jul. 31, 2011
Jul. 31, 2010
Royalty And License Fee Income $ 5,958 $ 7,437 $ 9,793
Abbott Molecular Inc [Member]
     
Royalty And License Fee Income   $ 400 $ 3,000