Enterprise-Wide Disclosures (Net Sales And Long-Lived Assets (Property, Plant, And Equipment) By Geographic Area) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 03, 2021	Apr. 03, 2021	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jul. 03, 2021	Jun. 27, 2020	Jun. 29, 2019
Segment Reporting Information [Line Items]
Net sales	$ 132,629	$ 134,600	$ 128,262	$ 123,207	$ 116,018	$ 111,455	$ 116,722	$ 105,285	$ 518,698	$ 449,480	$ 464,044
Long-lived assets	35,735				31,764				35,735	31,764
Long-Lived Assets	51,480				49,332				51,480	49,332	29,413
Domestic (U.S.)
Segment Reporting Information [Line Items]
Net sales									372,217	338,766	357,341
Long-lived assets	20,949				21,078				20,949	21,078	9,658
Foreign
Segment Reporting Information [Line Items]
Net sales									146,481	110,714	106,703
Mexico
Segment Reporting Information [Line Items]
Long-lived assets	24,089				20,828				24,089	20,828	17,781
Vietnam
Segment Reporting Information [Line Items]
Long-lived assets	5,919				6,567				5,919	6,567	1,220
China
Segment Reporting Information [Line Items]
Long-lived assets	$ 523				$ 859				$ 523	$ 859	$ 754