Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.3.0.814
Document and Entity Information - shares
9 Months Ended
Oct. 03, 2015
Nov. 06, 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   8,718,554
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 03, 2015