Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.2.0.727
Document and Entity Information - shares
6 Months Ended
Jul. 04, 2015
Aug. 05, 2015
Document Information [Line Items]    
Entity Registrant Name Synalloy Corporation  
Entity Central Index Key 0000095953  
Current Fiscal Year End Date --01-02  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   8,726,138
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 04, 2015