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Stock Option And Benefit Plans (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 27, 2018 | Jul. 28, 2017 | Oct. 28, 2016 | Jul. 26, 2016 | Sep. 28, 2019 | Jun. 29, 2019 | Jun. 30, 2018 | Jul. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  | $ 400 | $ 400 | $ 700
Intrinsic value for options exercised |  |  |  |  |  | 0 | 0 | 385
Unrecognized share based compensation expense |  |  |  |  |  | $ 400 |  |
Share Based Expense Recognition - Weighted-average period |  |  |  |  |  | 1 year 7 months 13 days |  |
Company contributions to 401K |  |  |  |  |  | $ 900 | $ 800 | $ 600
Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of SARs Granted | 161,250 | 272,500 | 10,000 | 242,500 |  |  |  |
Strike Price | $ 8.17 | $ 7.26 | $ 8.04 | $ 8.18 |  |  |  |
Grant date fair value | $ 2.27 | $ 1.89 | $ 2.30 | $ 2.42 |  |  |  |
July 27, 2018 SAR Grant [Member] | Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  |  | 141,250 |  |
July 28, 2017 SAR Grant [Member] | Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  |  | 227,500 |  |
October 28, 2016 SAR Grant [Member] | Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  |  | 10,000 |  |
July 26, 2016 SAR Grant [Member] | Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Outstanding SARs |  |  |  |  |  | 207,500 |  |
Subsequent Event | Number of Options/SARs Outstanding |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of SARs Granted |  |  |  |  | 160,000 |  |  |
Strike Price |  |  |  |  | $ 4.98 |  |  |
Grant date fair value |  |  |  |  | $ 1.24 |  |  |

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