Trade Accounts Receivable Purchase Programs (Detail) - USD ($) $ in Thousands	12 Months Ended
Jun. 27, 2020	Jun. 29, 2019
Receivables [Abstract]
Account Purchase Agreement Maximum Aggregate Amount	$ 25,000
Trade Accounts Receivable Sold To Third Party	41,400	$ 81,000
Accounts Receivable Factored To Banking Institutions and not yet collected	$ 9	$ 1,700

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