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Intangibles, Net | 12 Months Ended
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Jul. 31, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Intangibles, Net |
(7) |  | Intangibles, Net
Intangible assets consist of the following (in thousands, except remaining useful life):
|  |  |  | 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 |  |  |  |  |
Aggregate amortization expense on intangible assets was $4.5 million, $4.7 million and $3.9 million for the fiscal years ended July 31, 2012, 2011 and 2010, respectively. Intangible amortization expense for the next five fiscal years based upon July 31, 2012 intangible assets is expected to be as follows (in thousands):
2013 |  |  |  | $ | 3,499 |
2014 |  |  |  |  | 1,186 |
2015 |  |  |  |  | 765 |
2016 |  |  |  |  | 543 |
2017 |  |  |  |  | 317 |
Thereafter |  |  |  |  | 1,675 |
|  |  |  | $ | 7,985 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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