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Financial Risk Management - Sensitivity Analysis for Types of Market Risk (Details) - NZD ($) $ in Thousands | Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
--- | --- | --- | ---
10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | $ 145 | $ 179 |
10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | (145) | (179) |
1.00% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 145 | (145) |
1.00% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 179 | (179) |
US [Member] | 10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | (460) | (594) | $ (954)
US [Member] | 10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 460 | 594 | 954
AUD [Member] | 10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | (2) | (1) | (5)
AUD [Member] | 10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 2 | 1 | 5
GBP [Member] | 10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | (9) | (16) | (1)
GBP [Member] | 10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 9 | 16 | 1
EUR [Member] | 10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | (10) | (42) | (32)
EUR [Member] | 10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic | 10 | 42 | 32
HKD [Member] | 10% Increase [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic |  |  | (1)
HKD [Member] | 10% Decrease [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Risk exposure associated with instruments sharing characteristic |  |  | $ 1

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- Definition Statement Line Items + References No definition available. + Details
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- Definition The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer: Financial instruments, class [member]] + References No definition available. + Details
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Namespace Prefix: | NAKD_
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |

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- Details
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Period Type: |