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Royalty and licensing income (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jan. 31, 2014
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Jan. 31, 2013
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Jan. 31, 2014
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Jan. 31, 2013
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| Royalty and licensing income (Details) [Line Items] | ||||
| Patent Expiration Date | Apr. 24, 2018 | |||
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Life Sciences [Member]
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| Royalty and licensing income (Details) [Line Items] | ||||
| Royalty Revenue | $ 1.0 | $ 1.0 | $ 2.6 | $ 3.0 |
| X | ||||||||||
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- Definition
Patent expiration date. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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