Retirement Plan and Employee Stock Purchase Plan - Additional Information (Detail) (USD $)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Defined Benefit Plan Disclosure [Line Items]
Employee contribution percentage	3.00%
Years of age attained	20 years 6 months
Compensation expense	$ 10,500,000	$ 9,600,000	$ 15,800,000
First 3 Percent of Each Participant's Contributions
Defined Benefit Plan Disclosure [Line Items]
Matching contribution to defined contribution plan	100.00%
Next 3 Percent of Each Participant's Contributions
Defined Benefit Plan Disclosure [Line Items]
Matching contribution to defined contribution plan	50.00%
Full-time employees
Defined Benefit Plan Disclosure [Line Items]
Periods of service to be eligible	60 days
Part-time employees
Defined Benefit Plan Disclosure [Line Items]
Periods of service to be eligible	1000 hours
Defined Contribution Pension Plan 401k | Maximum
Defined Benefit Plan Disclosure [Line Items]
Employee contribution percentage	50.00%
Employee Stock Purchase Plan
Defined Benefit Plan Disclosure [Line Items]
Periods of service to be eligible	60 days
Employee Stock Purchase Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Matching investment per pay period	$ 100
Employee Stock Purchase Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Qualifying age	18 years
Matching percent of investment	15.00%
Revised Retirement Plan effective January 1, 2015 | First 3 Percent of Each Participant's Contributions
Defined Benefit Plan Disclosure [Line Items]
Matching contribution to defined contribution plan	100.00%
Revised Retirement Plan effective January 1, 2015 | Next 3 Percent of Each Participant's Contributions
Defined Benefit Plan Disclosure [Line Items]
Matching contribution to defined contribution plan	25.00%