Trade Accounts Receivable Purchase Programs (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 26, 2015	Dec. 27, 2014	Jul. 16, 2015	Jun. 27, 2015	Jun. 25, 2014
Receivables [Abstract]
Account Purchase Agreement Maximum Aggregate Amount			$ 20.0		$ 50.0
Trade Accounts Receivable Sold To Third Party	$ 34.8	$ 3.3
Accounts Receivable Factored To Banking Institutions	$ 1.4			$ 0.9

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