Enterprise Wide Disclosures (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 02, 2016	Apr. 02, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jul. 02, 2016	Jun. 27, 2015	Jun. 28, 2014
Segment Reporting Information [Line Items]
Net sales	$ 123,905	$ 118,448	$ 116,403	$ 126,209	$ 120,429	$ 112,915	$ 114,311	$ 86,342	$ 484,965	$ 433,997	$ 305,394
Percentage Of Net Sales									100.00%	100.00%	0.00%
Key Tronic E M S
Segment Reporting Information [Line Items]
Net sales									$ 483,300	$ 432,100	$ 303,100
Keyboard
Segment Reporting Information [Line Items]
Net sales									$ 1,700	$ 1,900	$ 2,300
Canada
Segment Reporting Information [Line Items]
Percentage Of Net Sales									7.00%	10.00%	16.00%