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Segment reporting (Detail) - Life Sciences segment revenues attributable to customers located in the United States and foreign countries (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Jul. 31, 2012
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Jul. 31, 2011
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Jul. 31, 2010
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| Sales Revenue Net | $ 103,083 | $ 102,029 | $ 97,082 |
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Life Sciences [Member] | United States [Member]
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| Sales Revenue Net | 28,372 | 32,928 | 38,695 |
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Life Sciences [Member] | Foreign Countries [Member]
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| Sales Revenue Net | 15,308 | 16,339 | 14,209 |
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Life Sciences [Member]
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| Sales Revenue Net | 43,680 | 49,267 | 52,904 |
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United States [Member]
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| Sales Revenue Net | $ 87,776 | $ 85,691 | $ 82,873 |
| X | ||||||||||
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- Definition
Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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