v3.8.0.1
Document and Entity Information - USD ($)
12 Months Ended
Feb. 03, 2018
Mar. 27, 2018
Jul. 28, 2017
Document And Entity Information      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Feb. 03, 2018    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Entity Registrant Name SPORTSMAN'S WAREHOUSE HOLDINGS, INC.    
Entity Central Index Key 0001132105    
Current Fiscal Year End Date --02-03    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float     $ 172,997,516
Entity Common Stock, Shares Outstanding   42,617,757  
Entity Current Reporting Status Yes