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Acquisition of Sierra Trading Post - Additional Information (Detail) AUD in Thousands, $ in Thousands |  | 9 Months Ended
--- | --- | ---
Oct. 24, 2015 USD ($) Store | Oct. 24, 2015 AUD Store | Oct. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |
Acquisition of Trade Secret, net of cash received |  |  | $ 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 | 35 |
Acquisition of Trade Secret, net of cash received | $ 57,104 | AUD 80,000 |

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