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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