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v3.21.1

Staff Costs - Disclosure of Detailed Information About Employee Benefits Expense (Details) (Parenthetical) - NZD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Staff Costs |  |  |
Restructure and transaction expenses | $ 29,400 | $ 29,400 | $ 29,400
Accural of warrant | $ 11,600 | $ 11,600 | $ 11,600
Exercise price of warrant | $ 0.37 | $ 0.37 | $ 0.37
Vesting percentage of outstanding shares | 1.05% | 1.05% | 1.05%

X
- Definition Accural of warrant. + References No definition available. + Details
Name: | NAKD_AccuralOfWarrant
Namespace Prefix: | NAKD_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Exercise price of warrant. + References No definition available. + Details
Name: | NAKD_ExercisePriceOfWarrant
Namespace Prefix: | NAKD_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Restructure and transaction expenses. + References No definition available. + Details
Name: | NAKD_RestructureAndTransactionExpenses
Namespace Prefix: | NAKD_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | NAKD_StaffCostsAbstract
Namespace Prefix: | NAKD_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Vesting percentage of outstanding shares. + References No definition available. + Details
Name: | NAKD_VestingPercentageOfOutstandingShares
Namespace Prefix: | NAKD_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant