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Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2019 | Jul. 31, 2018 | Jul. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross (Excluding Goodwill) | $ 65,466 | $ 81,460 |
Finite-Lived Intangible Assets, Accumulated Amortization | (29,343) | (38,872) |
Intangible Assets, Net (Excluding Goodwill) | 36,123 | 42,588 |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Amortization of Intangible Assets | 5,776 | $ 6,433 | $ 7,113
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 5,166 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 5,165 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 4,896 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | $ 2,025 |  |
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 9 years | 9 years |
Intangible Assets, Gross (Excluding Goodwill) | $ 46,595 | $ 61,944 |
Finite-Lived Intangible Assets, Accumulated Amortization | (29,343) | (38,872) |
Intangible Assets, Net (Excluding Goodwill) | 17,252 | 23,072 |
Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross (Excluding Goodwill) | 18,871 | 19,516 |
Finite-Lived Intangible Assets, Accumulated Amortization | 0 | 0 |
Intangible Assets, Net (Excluding Goodwill) | $ 18,871 | $ 19,516 |

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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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