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Schedule II Valuation of Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balances at beginning of period | $ 7,157 | $ 5,005 | $ 4,471
Additions — Due to acquired businesses | 388 | 0 | 0
Additions — Charged to expense | 803 | 2,495 | 587
Deductions - written off | (1,042) | (343) | (53)
Balances at end of period | 7,306 | 7,157 | 5,005
SEC Schedule, 12-09, Reserve, Inventory [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balances at beginning of period | 16,309 | 13,404 | 12,582
Additions — Due to acquired businesses | 2,957 | 0 | 0
Additions — Charged to expense | 4,908 | 5,722 | 3,168
Deductions - written off | (1,165) | (2,817) | (2,346)
Balances at end of period | 23,009 | 16,309 | 13,404
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balances at beginning of period | 58,809 | 60,073 | 56,866
Additions — Due to acquired businesses | 1,351 | 0 | 0
Additions — Charged to expense | 4,168 | 6,204 | 5,981
Deductions - written off | (13,259) | (7,468) | (2,774)
Balances at end of period | $ 51,069 | $ 58,809 | $ 60,073

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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