Document and Entity Information - shares	6 Months Ended
	Dec. 28, 2019	Feb. 04, 2020
Document Documentand Entity Information [Abstract]
Entity Incorporation, State or Country Code	WA
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 28, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Trading Symbol	KTCC
Entity Registrant Name	KEY TRONIC CORP
Entity Central Index Key	0000719733
Current Fiscal Year End Date	--06-29
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		10,759,680
Entity Tax Identification Number	91-0849125
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	0-11559
Entity Address, Address Line One	N. 4424 Sullivan Road
Entity Address, City or Town	Spokane Valley
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	99216
City Area Code	509
Local Phone Number	928-8000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, no par value
Entity Shell Company	false
Security Exchange Name	NASDAQ