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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