v3.8.0.1
Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Jan. 28, 2018
Mar. 15, 2018
Jul. 30, 2017
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jan. 28, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Trading Symbol dlth    
Entity Registrant Name DULUTH HOLDINGS INC.    
Entity Central Index Key 0001649744    
Current Fiscal Year End Date --01-28    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 183.5
Class A common stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   3,364,200  
Class B common stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   29,219,249