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Stock-Based Compensation - Additional Information (Detail) - USD ($)
12 Months Ended
Jan. 30, 2017
May 27, 2016
Feb. 02, 2016
Nov. 01, 2012
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         $ 29,214,000 $ 24,223,000 $ 17,072,000
Stock-based compensation cost capitalized         0 0 0
Rollover units and profit interests [1]         1,784,000    
Selling, general and administrative expenses         626,751,000 567,131,000 525,048,000
Waterworks Associates [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         $ 3,672,000    
Design Investors WW Acquisition Company, LLC [Member] | Profit Interests [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Profit interest expected life         5 years    
Selling, general and administrative expenses         $ 300,000    
Design Investors WW Acquisition Company, LLC [Member] | Profit Interests [Member] | Other Non-Current Obligations [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Liability associated with the profit interests         300,000    
Appreciation Rights [Member] | Design Investors WW Acquisition Company, LLC [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Rollover units and profit interests         1,500,000    
Appreciation Rights [Member] | Design Investors WW Acquisition Company, LLC [Member] | Rollover Units [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         0    
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Stock Options [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         $ 16,300,000 $ 10,400,000 6,900,000
Common stock shares issued         3,062,234    
Aggregate intrinsic value of options outstanding         $ 900,000    
Aggregate intrinsic value of options vested or expected to vest         800,000    
Aggregate intrinsic value of options exercisable         $ 400,000    
Weighted-average remaining contractual life of options exercisable         6 years 2 months 1 day    
Unrecognized compensation expense related to unvested options         $ 44,500,000    
Unrecognized compensation expense with weighted-average period         3 years 10 months 17 days    
Exercise price of stock option granted         $ 35.82    
2012 Stock Incentive Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total number of shares issuable     2,963,246     2,151,580  
Number of additional shares issuable     811,666   415,530    
2012 Stock Incentive Plan [Member] | Waterworks Associates [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         $ 3,700,000    
Stock option granted   322,784          
Exercise price of stock option granted   $ 33.54          
Stock option, lapse description         options are fully vested as of the date of grant but any shares issued upon exercise of such options will be subject to selling restrictions which are scheduled to lapse in five equal installments on the first, second, third, fourth and fifth anniversaries of the grant date.    
2012 Stock Incentive Plan [Member] | Restricted Stock Awards [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock-based compensation expense         $ 12,600,000 $ 13,800,000 $ 10,200,000
Unrecognized compensation expense with weighted-average period         3 years 8 months 9 days    
Unrecognized compensation expense related to unvested options         $ 39,400,000    
2012 Stock Incentive Plan [Member] | Subsequent Event [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of additional shares issuable 816,573            
Employees and Advisors [Member] | 2012 Stock Incentive Plan and 2012 Stock Option Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Common stock shares issued       6,829,041      
[1] Represents rollover units and profit interests associated with the acquisition of Waterworks. Refer to Note 16—Stock-Based Compensation.