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Intangibles, Net (Tables) | 12 Months Ended
--- | ---
Jul. 31, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of intangible assets |
|  |  |  | July 31, 2012 |
--- | --- | --- | --- | --- | ---
|  |  |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Weighted Average Remaining Useful Life (in years)
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenants not to compete |  |  |  | $ | 11,087 |  |  | $ | (10,685 | ) |  | $ | 402 |  |  |  | 4 |
Supply contracts |  |  |  |  | 26,041 |  |  |  | (18,762 | ) |  |  | 7,279 |  |  |  | 6 |
Licenses and databases |  |  |  |  | 1,316 |  |  |  | (1,012 | ) |  |  | 304 |  |  |  | 1 |
|  |  |  | $ | 38,444 |  |  | $ | (30,459 | ) |  | $ | 7,985 |  |  |  |  |
|  |  |  | July 31 , 2011 |
--- | --- | --- | --- | --- | ---
|  |  |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Weighted Average Remaining Useful Life (in years)
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenants not to compete |  |  |  | $ | 10,896 |  |  | $ | (10,486 | ) |  | $ | 410 |  |  |  | 3 |
Supply contracts |  |  |  |  | 27,238 |  |  |  | (15,409 | ) |  |  | 11,829 |  |  |  | 3 |
Licenses and databases |  |  |  |  | 1,337 |  |  |  | (828 | ) |  |  | 509 |  |  |  | 3 |
|  |  |  | $ | 39,471 |  |  | $ | (26,723 | ) |  | $ | 12,748 |  |  |  |  |
Schedule of aggregate amortization expense on intangible assets |
2013 |  |  |  | $ | 3,499 |
2014 |  |  |  |  | 1,186 |
2015 |  |  |  |  | 765 |
2016 |  |  |  |  | 543 |
2017 |  |  |  |  | 317 |
Thereafter |  |  |  |  | 1,675 |
|  |  |  | $ | 7,985 |

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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 No definition available. + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + 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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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