Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information (USD $)
9 Months Ended
Sep. 29, 2012
Nov. 08, 2012
Jul. 01, 2011
Document and Entity Information [Abstract]      
Entity Registrant Name Synalloy Corp    
Entity Central Index Key 0000095953    
Current Fiscal Year End Date --12-29    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 77,500,000
Entity Common Stock, Shares Outstanding   6,352,733  
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q3    
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 29, 2012