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Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Jul. 31, 2019
Finite-Lived Intangible Assets [Line Items] |  |  |
Amortization of Intangible Assets | $ 2,500 | $ 2,900 |
Amortized intangibles: |  |  |
Accumulated amortization | (27,668) |  | $ (25,142)
Net intangibles | 52,617 |  | 55,156
Supply contracts and customer relationships |  |  |
Amortized intangibles: |  |  |
Gross carrying amount | 49,072 |  | 49,109
Trade names |  |  |
Amortized intangibles: |  |  |
Gross carrying amount | 23,518 |  | 23,501
Licenses and databases |  |  |
Amortized intangibles: |  |  |
Gross carrying amount | $ 7,695 |  | $ 7,688

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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