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Stock Option And Benefit Plans (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 09, 2021 | Jul. 23, 2020 | Jul. 27, 2019 | Jul. 27, 2018 | Jul. 03, 2021 | Jun. 27, 2020 | Jun. 29, 2019 | Jul. 26, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  | 155,000 | 175,000 | 161,250 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value |  | $ 6.94 |  | $ 8.17 |  |  |  | $ 4.93
Grant date fair value |  | $ 2.32 | $ 1.23 | $ 2.27 |  |  |  |
Stock-based compensation expense |  |  |  |  | $ 0.2 | $ 0.3 | $ 0.4 |
Unrecognized share based compensation expense |  |  |  |  | $ 0.3 |  |  |
Share Based Expense Recognition - Weighted-average period |  |  |  |  | 1 year 9 months 21 days |  |  |
Company contributions to 401K |  |  |  |  | $ 0.9 | $ 0.8 | $ 0.9 |
July 23, 2020 SAR Grant |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  | 150,000 |  |  |
July 26, 2019 SAR Grant |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  | 140,000 |  |  |
July 27, 2018 SAR Grant [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  | 116,250 |  |  |
Subsequent Event |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 165,000 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value | $ 7.17 |  |  |  |  |  |  |
Grant date fair value | $ 2.73 |  |  |  |  |  |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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