v3.7.0.1
Document and Entity Information - shares
6 Months Ended
Jul. 29, 2017
Aug. 18, 2017
Document And Entity Information    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 29, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
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 Common Stock, Shares Outstanding   42,579,145
Entity Current Reporting Status Yes