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Intangibles, Net | 12 Months Ended
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Jul. 31, 2016
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Intangibles, Net | 6 — Intangibles, Net The following table sets forth amortizable intangible assets by major asset class:
| Gross Carrying Amount |  | Accumulated Amortization | Net Book Value |  | Weighted Average Remaining Useful Life (in years)
| July 31, |  | July 31, |  | July 31, |  | July 31,
(In thousands, except remaining useful life) | 2016 |  | 2015 |  | 2016 |  | 2015 |  | 2016 |  | 2015 |  | 2016 |  | 2015
Amortized intangibles: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenants not to compete | $ | 1,702 |  |  | $ | 1,691 |  |  | $ | (1,235 | ) |  | $ | (900 | ) |  | $ | 467 |  |  | $ | 791 |  |  | 2 |  | 3
Supply contracts and customer relationships | 26,471 |  |  | 27,506 |  |  | (17,052 | ) |  | (13,551 | ) |  | 9,419 |  |  | 13,955 |  |  | 3 |  | 4
Trade names | 5,163 |  |  | 5,129 |  |  | (3,423 | ) |  | (2,467 | ) |  | 1,740 |  |  | 2,662 |  |  | 2 |  | 3
Licenses and databases | 2,488 |  |  | 2,498 |  |  | (2,353 | ) |  | (2,049 | ) |  | 135 |  |  | 449 |  |  | 1 |  | 2
Intangibles, net | $ | 35,824 |  |  | $ | 36,824 |  |  | $ | (24,063 | ) |  | $ | (18,967 | ) |  | $ | 11,761 |  |  | $ | 17,857 |  |  |  |  |
Aggregate amortization expense on intangible assets was $5.8 million, $6.8 million and $6.9 million for the years ended July 31, 2016, 2015 and 2014, respectively. Intangible amortization expense for the next five fiscal years based upon July 31, 2016 intangible assets is expected to be as follows:
(In thousands) |
2017 | $ | 5,428 |
2018 | 4,377 |
2019 | 832 |
2020 | 545 |
2021 | 265 |
Thereafter | 314 |
Total future intangible amortization expense | $ | 11,761 |

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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 Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 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=66006027&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=66006027&loc=d3e16373-109275 + Details
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