| Document And Entity Information | Jul. 30, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jul. 30, 2024 |
| Entity Registrant Name | SPORTSMAN'S WAREHOUSE HOLDINGS, INC. |
| Entity Central Index Key | 0001132105 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-36401 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 39-1975614 |
| Entity Address, Address Line One | 1475 West 9000 South |
| Entity Address, Address Line Two | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $.01 par value |
| Trading Symbol | SPWH |
| Security Exchange Name | NASDAQ |
