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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 02, 2020 | Apr. 27, 2019 | May 02, 2020 | Apr. 27, 2019
Changes in Accumulated Other Comprehensive Income (Loss) By Component |  |  |  |
Stockholders' equity, beginning balance | $ 438,910 | $ 353,289 | $ 396,000 | $ 315,072
Other comprehensive income (loss) before reclassifications | (778) | (50) | 1,705 | 91
Amounts reclassified from AOCI | (1) |  | (3) |
Total other comprehensive income (loss), net of tax | (779) | (50) | 1,702 | 91
Stockholders' equity, ending balance | 422,580 | 375,135 | 422,580 | 375,135
Tax (benefit) expense for gains and losses on available-for-sale securities | 126 | 35 | 259 | 48
Available-for-sale Securities |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) By Component |  |  |  |
Stockholders' equity, beginning balance | 466 | 22 | 391 | 0
Other comprehensive income (loss) before reclassifications | 995 | 140 | 1,072 | 162
Amounts reclassified from AOCI | (1) |  | (3) |
Total other comprehensive income (loss), net of tax | 994 | 140 | 1,069 | 162
Stockholders' equity, ending balance | 1,460 | 162 | 1,460 | 162
Foreign Currency Translation |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) By Component |  |  |  |
Stockholders' equity, beginning balance | 1,828 | 119 | (578) | 0
Other comprehensive income (loss) before reclassifications | (1,773) | (190) | 633 | (71)
Amounts reclassified from AOCI | 0 |  | 0 |
Total other comprehensive income (loss), net of tax | (1,773) | (190) | 633 | (71)
Stockholders' equity, ending balance | 55 | (71) | 55 | (71)
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Changes in Accumulated Other Comprehensive Income (Loss) By Component |  |  |  |
Stockholders' equity, beginning balance | 2,294 | 141 | (187) | 0
Total other comprehensive income (loss), net of tax | (779) | (50) | 1,702 | 91
Stockholders' equity, ending balance | $ 1,515 | $ 91 | $ 1,515 | $ 91

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- Definition Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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