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| | <Log type="Warning"> [dq-0712-Presentation-Base-Set-Order] Role '41301 - Schedule - Schedule II Valuation and Qualifying Accounts (Details)', a level 4, Detail role, appears before '995445 - Disclosure - Insider Trading Arrangements', a level 1, Note role. dlth-20240128.xsd 8, https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd 108 </Log> |
| | </Logs> |
| <InputFiles> |
| | <File> dlth-20240128.xsd </File> |
| | <File> dlth-20240128_cal.xml </File> |
| | <File> dlth-20240128_def.xml </File> |
| | <File> dlth-20240128_lab.xml </File> |
| | <File> dlth-20240128_pre.xml </File> |
| | <File doctype="10-K" isDefinitelyFs="true" isUsgaap="true" original="dlth-20240128x10k.htm"> dlth-20240128x10k.htm </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies> |
| | <BaseTaxonomy items="1"> http://fasb.org/srt/2023 </BaseTaxonomy> |
| | <BaseTaxonomy items="715"> http://fasb.org/us-gaap/2023 </BaseTaxonomy> |
| | <BaseTaxonomy items="40"> http://xbrl.sec.gov/dei/2023 </BaseTaxonomy> |
| | <BaseTaxonomy items="4"> http://xbrl.sec.gov/ecd/2023 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |