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v3.21.2

Valuation and Qualifying Accounts and Reserves (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2018
Allowance for doubtful accounts receivable |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period | $ 1,648,000 | $ 1,769,000 | $ 1,867,000 | $ 1,761,000
Charged to cost and expenses | (18,000) | 45,000 | 1,136,000 |
Charged to other accounts | 215,000 | 0 | 0 |
Transfers (deductions) | (318,000) | (143,000) | (1,030,000) |
Balance at end of period | 1,648,000 | 1,769,000 | 1,867,000 |
Inventory reserves |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period | 20,229,000 | 19,076,000 | 19,696,000 | 17,427,000
Charged to cost and expenses | 4,364,000 | 1,647,000 | 6,015,000 |
Charged to other accounts | 0 | 0 | 0 |
Transfers (deductions) | (3,211,000) | (2,267,000) | (3,746,000) |
Balance at end of period | 20,229,000 | 19,076,000 | 19,696,000 |
Valuation allowance for deferred tax assets |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period | 28,384,000 | 11,471,000 | 12,568,000 | $ 11,854,000
Charged to cost and expenses | 17,750,000 | 750,000 | 58,000 |
Charged to other accounts | 0 | 0 | 656,000 |
Transfers (deductions) | (837,000) | (1,847,000) | 0 |
Balance at end of period | $ 28,384,000 | $ 11,471,000 | $ 12,568,000 |

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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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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + 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 C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense. + 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 C)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in 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 D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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