v3.3.1.900
Document and Entity Information - USD ($)
12 Months Ended
Jan. 30, 2016
Mar. 24, 2016
Jul. 31, 2015
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jan. 30, 2016    
Document Fiscal Year Focus 2015    
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 --01-30    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   42,004,368  
Entity Well Known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 210,123,179