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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Oct. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of aggregate amortization expense on intangible assets |
|  | October 31, 2013 |  |  | July 31, 2013 |
Amortized intangibles: |  |  |  |  |  |
Covenants not to compete |  | $ | 12,526 |  |  | $ | 12,515 |
Supply contracts |  |  | 27,696 |  |  |  | 26,322 |
Customer relationships |  |  | 7,513 |  |  |  | 7,389 |
Trade name |  |  | 3,078 |  |  |  | 2,998 |
Licenses and databases |  |  | 2,092 |  |  |  | 3,306 |
Accumulated amortization |  |  | (36,998 | ) |  |  | (34,824 | )
Net intangibles |  | $ | 15,907 |  |  | $ | 17,706 |
Schedule of change in carrying amount of goodwill |
Balance as of July 31, 2013 |  | $ | 267,463 |
Goodwill recorded during the period, see Note 13, Acquisitions |  |  | 9,600 |
Effect of foreign currency exchange rates |  |  | 4,384 |
Balance as of October 31, 2013 |  | $ | 281,447 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 + Details
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