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Intangibles, Net (Tables) | 12 Months Ended
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Jul. 31, 2016
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of intangible assets | 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 |  |  |  |  |
Schedule of aggregate amortization expense on intangible assets | 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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