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Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Jan. 31, 2018
Jan. 31, 2017
Income Tax Disclosure [Abstract]    
Prepaid expense $ (2,358) $ (3,460)
Depreciation (38,662) (70,944)
Other temporary differences (1,017) (2,024)
Gross deferred tax liabilities (42,037) (76,428)
Deferred rent 54,958 79,675
Inventory 9,726 9,760
Accounts receivable 1,240 3,241
Net operating loss carryforwards 2,364 2,859
Tax uncertainties 1,033 1,949
Accrued salaries and benefits 14,437 28,234
Income tax credits 5,399 4,550
Other temporary differences 8,533 5,512
Gross deferred tax assets, before valuation allowances 97,690 135,780
Valuation allowances (9,451) (6,688)
Net deferred tax assets $ 46,202 $ 52,664