Trade Accounts Receivable Purchase Programs (Detail) - USD ($) $ in Millions	12 Months Ended
Jul. 01, 2017	Jul. 02, 2016	Jul. 16, 2015
Receivables [Abstract]
Account Purchase Agreement Maximum Aggregate Amount			$ 20.0
Trade Accounts Receivable Sold To Third Party	$ 86.5	$ 78.0
Accounts Receivable Factored To Banking Institutions and not yet collected	$ 1.6	$ 1.7

This amount represents the amount of accounts receivable sold to third party financial institutions in relation to the company's accounts receivable factoring program.

No definition available.

Name:	ktcc_AccountsReceivableFactoredToBankingInstitutions
Namespace Prefix:	ktcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant