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
	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jun. 29, 2019	Jun. 30, 2018	Jul. 01, 2017
Segment Reporting Information [Line Items]
Net sales	$ 105,581	$ 107,954	$ 123,037	$ 127,472	$ 117,028	$ 108,352	$ 111,725	$ 109,217	$ 464,044	$ 446,322	$ 467,797
Long-lived assets	29,413				27,548				29,413	27,548	30,496
Domestic (U.S.)
Segment Reporting Information [Line Items]
Net sales									357,341	329,230	361,886
Long-lived assets	9,658				7,454				9,658	7,454	8,988
Foreign
Segment Reporting Information [Line Items]
Net sales									106,703	117,092	105,911
Mexico
Segment Reporting Information [Line Items]
Long-lived assets	17,781				19,395				17,781	19,395	20,878
Vietnam
Segment Reporting Information [Line Items]
Long-lived assets	1,220				0				1,220	0	0
China
Segment Reporting Information [Line Items]
Long-lived assets	$ 754				$ 699				$ 754	$ 699	$ 630