XML 20 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document and Entity Information - USD ($)
 12 Months Ended
Jan. 30, 2021
Apr. 02, 2021
Aug. 01, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Jan. 30, 2021    
Entity File Number 001-36401    
Entity Registrant Name SPORTSMAN’S WAREHOUSE HOLDINGS, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 39-1975614    
Entity Address, Address Line One 1475 West 9000 South Suite A    
Entity Address, City or Town West Jordan    
Entity Address, State or Province UT    
Entity Address, Postal Zip Code 84088    
City Area Code 801    
Local Phone Number 566-6681    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol SPWH    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   43,648,226  
Entity Public Float     $ 694,897,431
Current Fiscal Year End Date --01-30    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001132105    
Amendment Flag false