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CEO Transition Costs - Additional Information (Details) $ in Millions | 3 Months Ended
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May 04, 2019 USD ($)
Related Party Transactions [Abstract] |
CEO search costs, acting CEO consulting costs, housing allowance and legal fees | $ 0.7

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- Definition Search costs acting consulting costs housing allowance and legal fees. + References No definition available. + Details
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Namespace Prefix: | dxlg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration