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Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Jan. 31, 2019
Jan. 31, 2018
Income Tax Disclosure [Abstract]    
Prepaid expense $ (1,729) $ (2,358)
Depreciation (39,303) (38,662)
Other temporary differences (1,258) (1,017)
Gross deferred tax liabilities (42,290) (42,037)
Deferred rent 52,409 54,958
Inventory 10,579 9,726
Accounts receivable 2,198 1,240
Net operating loss carryforwards 1,945 2,364
Tax uncertainties 953 1,033
Accrued salaries and benefits 20,216 14,437
Income tax credits 4,659 5,399
Other temporary differences 6,119 8,533
Gross deferred tax assets, before valuation allowances 99,078 97,690
Valuation allowances (3,906) (9,451)
Net deferred tax assets $ 52,882 $ 46,202