Retirement Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Employee Savings Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Employees age limit	21 years
Contributions, net of forfeitures	$ 1.3	$ 1.2	$ 1.2
Executive Deferred Compensation Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Vested participant balances are included in other long-term liabilities	$ 2	$ 2