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Income Taxes - Deferred Income Taxes - Narrative (Detail) - USD ($)
$ in Thousands
Jan. 31, 2016
May. 03, 2015
Feb. 01, 2015
Income Taxes [Line Items]      
Non-current deferred tax asset $ 4,312 $ 5,169 [1] $ 5,020
Non-current deferred tax liability 1,209 982 [1] 927
U.S. Tax Authorities [Member]      
Income Taxes [Line Items]      
Non-current deferred tax asset 3,500 4,300 4,200
China [Member]      
Income Taxes [Line Items]      
Non-current deferred tax asset 773 868 776
Canada [Member]      
Income Taxes [Line Items]      
Non-current deferred tax liability $ 1,200 $ 982 $ 927
[1] Derived from audited financial statements.