v3.19.3
Document and Entity Information - shares
9 Months Ended
Nov. 02, 2019
Dec. 06, 2019
Document And Entity Information    
Document Type 10-Q  
Document Period End Date Nov. 02, 2019  
Entity Registrant Name SPORTSMAN'S WAREHOUSE HOLDINGS, INC.  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Interactive Data Current Yes  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   43,230,023
Current Fiscal Year End Date --02-01  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Central Index Key 0001132105  
Amendment Flag false