Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.1.9
Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Apr. 04, 2015
May 06, 2015
Jun. 27, 2014
Document Information [Line Items]      
Entity Registrant Name Synalloy Corporation    
Entity Central Index Key 0000095953    
Current Fiscal Year End Date --01-03    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 135.6dei_EntityPublicFloat
Entity Common Stock, Shares Outstanding   8,717,922dei_EntityCommonStockSharesOutstanding  
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q1    
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Apr. 04, 2015