v3.25.4
Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 27, 2025
Feb. 18, 2026
Jun. 28, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 27, 2025    
Document Transition Report false    
Entity File Number 0-16088    
Entity Registrant Name CPS TECHNOLOGIES CORP.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 04-2832509    
Entity Address, Address Line One 111 South Worcester Street    
Entity Address, City or Town Norton    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02766-2102    
City Area Code 508    
Local Phone Number 222-0614    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol CPSH    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 52
Entity Common Stock, Shares Outstanding (in shares)   17,991,780  
Auditor Name PKF O’Connor Davies, LLP    
Auditor Location Boston, Massachusetts    
Auditor Firm ID 127    
Entity Central Index Key 0000814676    
Current Fiscal Year End Date --12-27    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false