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Acquisition of Trade Secret - Additional Information (Detail) $ in Thousands, AUD in Millions |  | 9 Months Ended
--- | --- | ---
Oct. 24, 2015 USD ($) Store | Oct. 24, 2015 AUD | Oct. 29, 2016 USD ($) | Oct. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |  |
Acquisition of Trade Secret, net of cash received |  |  | $ 2,324 | $ 57,104
Trade Secret |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition, date of acquisition | Oct. 24, 2015 | Oct. 24, 2015 |  |
Business acquisition, number of operating stores acquired | Store | 35 |  |  |
Acquisition of Trade Secret, net of cash received | $ 59,400 | AUD 83.3 |  |
Identifiable amortizable intangible assets | $ 12,000 |  |  |
Identifiable intangible assets, amortization period | 10 years | 10 years |  |
Goodwill acquired | $ 25,000 |  |  |

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