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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jul. 25, 2020 | Jul. 27, 2019
Statement of Stockholders' Equity [Abstract] |  |
Tax expense (benefit) associated with other comprehensive loss and income | $ (196) | $ (69)
Tax expense for adjustment due to the adoption of ASU 2016-02 |  | $ 1,385
Accounting Standards Update [Extensible List] |  | us-gaap:AccountingStandardsUpdate201602Member

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