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Goodwill and Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2021 | Jul. 31, 2021
--- | --- | ---
Amortized intangibles: |  |
Accumulated amortization | $ (31,178) | $ (29,405)
Net intangibles | 43,914 | 45,873
Supply contracts and customer relationships |  |
Amortized intangibles: |  |
Gross carrying amount | 55,438 | 55,598
Trade names |  |
Amortized intangibles: |  |
Gross carrying amount | 18,935 | 18,944
Licenses and databases |  |
Amortized intangibles: |  |
Gross carrying amount | $ 719 | $ 736

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