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Enterprise Wide Disclosures (Narrative) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 26, 2015 | Sep. 26, 2015 | Jul. 01, 2017 | Jul. 02, 2016 | Jun. 27, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 118,544 | $ 113,601 | $ 118,517 | $ 117,135 | $ 123,905 | $ 118,448 | $ 116,403 | $ 126,209 | $ 467,797 | $ 484,965 | $ 433,997
Percentage Of Net Sales |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 0.00%
Key Tronic E M S |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 466,600 | $ 483,300 | $ 432,100
Keyboard |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 1,200 | $ 1,700 | $ 1,900
Canada |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage Of Net Sales |  |  |  |  |  |  |  |  | 1.00% | 7.00% | 10.00%

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