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Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Feb. 02, 2020
Mar. 16, 2020
Aug. 04, 2019
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Feb. 02, 2020    
Document Transition Report false    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --02-02    
Entity File Number 001-37641    
Entity Registrant Name DULUTH HOLDINGS INC.    
Entity Tax Identification Number 39-1564801    
Entity Incorporation, State or Country Code WI    
Entity Address, Address Line One 201 East Front Street    
Entity Address, City or Town Mount Horeb    
Entity Address, State or Province WI    
Entity Address, Postal Zip Code 53572    
City Area Code 608    
Local Phone Number 424-1544    
Title of 12(b) Security Class B Common Stock, No Par Value    
Trading Symbol DLTH    
Security Exchange Name NASDAQ    
Entity Interactive Data Current Yes    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period true    
Entity Shell Company false    
Entity Public Float     $ 129.6
Documents Incorporated by Reference

Portions of the registrant’s definitive proxy statement to be filed within 120 days of February 2, 2020 are incorporated by reference in this Annual Report on Form 10-K in response to Part III, Items 10, 11, 12, 13 and 14.

   
Entity Central Index Key 0001649744    
Amendment Flag false    
Class A common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   3,364,200  
Class B common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   29,359,910