v3.19.1
Document and Entity Information - USD ($)
12 Months Ended
Feb. 02, 2019
Mar. 29, 2019
Aug. 03, 2018
Document And Entity Information      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Feb. 02, 2019    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Trading Symbol SPWH    
Entity Registrant Name SPORTSMAN'S WAREHOUSE HOLDINGS, INC.    
Entity Central Index Key 0001132105    
Current Fiscal Year End Date --02-02    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float     $ 204,983,741
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Shell Company false    
Entity Ex Transition Period true    
Entity Common Stock, Shares Outstanding   42,978,780  
Entity Current Reporting Status Yes