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Cover Page - USD ($)
 12 Months Ended
Dec. 27, 2024
Feb. 18, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 27, 2024    
Current Fiscal Year End Date --12-27    
Document Transition Report false    
Entity File Number 001-37961    
Entity Registrant Name ICHOR HOLDINGS, LTD.    
Entity Incorporation, State or Country Code E9    
Entity Address, Address Line One 3185 Laurelview Ct.    
Entity Address, City or Town Fremont    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94538    
City Area Code 510    
Local Phone Number 897-5200    
Title of 12(b) Security Ordinary Shares, par value $0.0001 per share    
Trading Symbol ICHR    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Ordinary Shares Outstanding   34,003,244  
Entity Public Float     $ 1,280,861,000
Entity Central Index Key 0001652535    
Entity Tax Identification Number 00-0000000    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Filer Category Large Accelerated Filer    
Documents Incorporated by Reference
The information required by Part III of Form 10‑K is incorporated herein by reference to portions of the registrant’s Definitive Proxy Statement relating to its 2025 Annual General Meeting of Shareholders, which will be filed with the Securities and Exchange Commission within 120 days after the end of the registrant’s fiscal year ended December 27, 2024.