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DOCUMENT AND ENTITY INFORMATION - USD ($)
$ in Millions
 12 Months Ended
Oct. 01, 2022
Nov. 14, 2022
Apr. 02, 2022
Entity Addresses [Line Items]      
Entity Registrant Name KULICKE AND SOFFA INDUSTRIES, INC.    
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Amendment Flag false    
Document Period End Date Oct. 01, 2022    
Entity File Number 000-00121    
Entity Central Index Key 0000056978    
Entity Incorporation, State or Country Code PA    
Entity Address, Address Line One 23A Serangoon North Avenue 5    
Entity Address, Address Line Two #01-01    
Entity Address, Country SG    
Entity Address, Postal Zip Code 554369    
City Area Code 215    
Local Phone Number 784-6000    
Title of 12(b) Security Common Stock, Without Par Value    
Trading Symbol KLIC    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 3,279.6
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Tax Identification Number 23-1498399    
ICFR Auditor Attestation Flag true    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Entity Common Stock, Shares Outstanding   57,018,988  
Entity Address, City or Town Singapore    
Current Fiscal Year End Date --10-01    
Principal Executive Offices      
Entity Addresses [Line Items]      
Entity Address, Address Line One 1005 Virginia Dr.    
Entity Address, Postal Zip Code 19034    
Entity Address, State or Province PA    
Entity Address, City or Town Fort Washington