Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Jan. 01, 2017
Mar. 09, 2017
Jul. 03, 2016
Document Information [Line Items]      
Entity Registrant Name SMTC CORP    
Entity Central Index Key 0001108320    
Trading Symbol smtx    
Current Fiscal Year End Date --01-01    
Entity Filer Category Smaller Reporting Company    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Common Stock, Shares Outstanding (in shares)   16,729,216  
Entity Public Float     $ 19.5
Document Type 10-K    
Document Period End Date Jan. 01, 2017    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Amendment Flag false