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Employee Benefit Plans - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Jun. 04, 2013
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Feb. 01, 2014
Restricted Stock Units [Member]
Feb. 02, 2013
Restricted Stock Units [Member]
Jan. 28, 2012
Restricted Stock Units [Member]
Feb. 01, 2014
In Money Stock Option [Member]
Feb. 01, 2014
In Money Stock Option [Member]
Feb. 02, 2013
In Money Stock Option [Member]
Jan. 28, 2012
In Money Stock Option [Member]
Feb. 01, 2014
Employee Stock Purchase Plan [Member]
Feb. 02, 2013
Employee Stock Purchase Plan [Member]
Jan. 28, 2012
Employee Stock Purchase Plan [Member]
Jun. 04, 2013
Maximum [Member]
Feb. 01, 2014
Maximum [Member]
Jun. 04, 2013
Minimum [Member]
Feb. 01, 2014
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Total stock-based compensation expense   $ 2,800,000 $ 2,700,000 $ 3,100,000 $ 1,300,000 $ 1,300,000 $ 1,100,000                      
Maximum shares of common stock award                       500,000     3,500,000      
Maximum contractual terms 10 years                                  
Options issued to employees, Vested term                             4 years   3 years  
Options to purchase outstanding common stock   1,285,792 1,417,906         1,070,321 1,070,321                  
Restricted stock units outstanding   236,000 247,000                              
Options exercise prices, Lower limit         $ 10.93                         $ 2.03
Options exercise prices, Upper limit         $ 15.79                     $ 19.06    
Shares reserved for future stock-based grants   1,249,336                                
Intrinsic value of in-the-money options outstanding               9,100,000 9,100,000                  
Aggregate Intrinsic value options exercisable               7,300,000 7,300,000                  
Weighted average grant, fair value of options granted                 $ 9.51 $ 5.79 $ 7.54              
Intrinsic value of options exercised                 2,600,000 400,000 1,300,000              
Unrecognized stock compensation expense               2,800,000 2,800,000                  
Recognized over a weighted average period         1 year 3 months 18 days     1 year 9 months 18 days                    
Restricted Stock Units Granted to Directors and Vested on First Anniversary of Grant Date         100.00%                          
Percentage of Restricted Stock Units Granted to Employees vested on Third Anniversary of Grant date         100.00%                          
Restricted stock units granted   104,000     104,000 94,000 89,000                      
Restricted stock units, fair value grant prices per share   $ 15.79     $ 15.79 $ 10.93 $ 12.33                      
Unrecognized compensation expense related to RSUs         1,600,000                          
Payroll deduction of the fair market value                       85.00%            
Shares of common stock issued                       19,478 30,545 29,204        
Shares remaining under the original authorization                       51,654            
Maximum Employee Contribution Percent   6.00%                                
Percentage of Employee's Contribution Matched by Company   50.00%                                
Company's matching contributions   383,000 446,000 402,000                            
Company's additional contributions on behalf of employees   0 0 0                            
Company's matching contributions   $ 62,000 $ 65,000 $ 60,000