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Document and Entity Information
Nov. 19, 2020
Nov. 18, 2020
Cover [Abstract]    
Document Type   8-K
Document Period End Date   Nov. 18, 2020
Entity Registrant Name   KULICKE & SOFFA INDUSTRIES INC
Entity Central Index Key   0000056978
Amendment Flag   false
Entity Incorporation, State or Country Code PA  
Entity File Number   000-00121
Entity Tax Identification Number   23-1498399
Entity Address, Address Line One   23A Serangoon North Avenue 5
Entity Address, Address Line Two   #01-01
Entity Address, Address Line Three   K&S Corporate Headquarters
Entity Address, City or Town   Singapore
Entity Address, Country   SG
Entity Address, Postal Zip Code   554369
City Area Code   215
Local Phone Number   784-6000
Written Communications   false
Soliciting Material   false
Pre-commencement Tender Offer   false
Pre-commencement Issuer Tender Offer   false
Entity Emerging Growth Company   false
Title of 12(b) Security   Common Stock, Without Par Value
Trading Symbol   KLIC
Security Exchange Name   NASDAQ