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Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Jan. 31, 2017
Jan. 31, 2016
Components Of Deferred Tax Assets And Liabilities [Line Items]    
Prepaid expense $ (3,460) $ (4,645)
Depreciation (70,944) (66,936)
Other temporary differences (2,024) (2,604)
Gross deferred tax liabilities (76,428) (74,185)
Deferred rent 79,675 72,253
Inventory 9,760 11,031
Accounts receivable 3,241 3,953
Net operating loss carryforwards 2,859 4,941
Tax uncertainties 1,949 2,972
Accrued salaries and benefits 28,234 27,660
Income tax credits 4,550 4,287
Other temporary differences 5,512 7,896
Gross deferred tax assets, before valuation allowances 135,780 134,993
Valuation allowances (6,688) (6,560)
Net deferred tax assets $ 52,664 $ 54,248