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Summary of Significant Accounting Policies - Disaggregation of revenue from contracts with customers (Details) | 12 Months Ended
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Feb. 02, 2019 | Feb. 03, 2018 | Jan. 28, 2017
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 100.00% | 100.00% | 100.00%
Camping |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 14.20% | 15.10% | 14.60%
Clothing |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 8.90% | 9.30% | 8.70%
Fishing |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 10.60% | 10.70% | 10.00%
Footwear |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 7.30% | 7.40% | 7.10%
Hunting and Shooting |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 48.30% | 48.70% | 50.90%
Optics, Electronics, Accessories, and Other |  |  |
Disaggregation of revenue from contracts with customers |  |  |
Net sales (as a percent) | 10.60% | 8.80% | 8.70%

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- Definition Percentage of revenue from contract with customers net of excise and sales taxes. + References No definition available. + Details
Name: | spwh_PercentageOfRevenueFromContractWithCustomerExcludingAssessedTaxTotal
Namespace Prefix: | spwh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ProductOrServiceAxis=spwh_CampingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=spwh_ClothingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=spwh_FishingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=spwh_FootwearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=spwh_HuntingAndShootingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=spwh_OpticsElectronicsAccessoriesAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |