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Additional Balance Sheet Information (Notes) | 9 Months Ended
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Apr. 30, 2020
Additional Balance Sheet Information [Abstract] |
Supplemental Balance Sheet Disclosures [Text Block] | Additional Balance Sheet Information Inventories Inventories as of April 30, 2020, and July 31, 2019, consisted of the following:
| April 30, 2020 |  | July 31, 2019
Finished products | $ | 77,634 |  |  | $ | 77,532 |
Work-in-process | 22,819 |  |  | 20,515 |
Raw materials and supplies | 24,122 |  |  | 21,990 |
Total inventories | $ | 124,575 |  |  | $ | 120,037 |
Property, plant and equipmentProperty, plant and equipment is presented net of accumulated depreciation in the amount of $279,757 and $273,880 as of April 30, 2020, and July 31, 2019, respectively.

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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