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Stock-Based Compensation - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jul. 29, 2017
USD ($)
shares
Jul. 30, 2016
USD ($)
shares
Jul. 29, 2017
USD ($)
shares
Jul. 30, 2016
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock unit vesting and settlement ratio to common shares     1  
Restricted-Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost, net of estimated forfeitures, related to nonvested restricted stock units | $ $ 6,100,000   $ 6,100,000  
Weighted average period to recognize the total unrecognized compensation cost     1 year 10 months  
Time-based Restricted Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted-stock awards/units granted in period     294,000  
Performance-based Restricted Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted-stock awards/units granted in period     212,000  
Restricted stock units vesting period, years     3 years  
2010 Equity and Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of common stock shares 6,076,001   6,076,001  
2010 Equity and Incentive Plan [Member] | Restricted-Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted-stock awards/units granted in period 0 106,984 506,572 402,132
Restricted-stock awards/units with an aggregate grant-date fair value | $ $ 0 $ 1,600,000 $ 4,700,000 $ 7,400,000
Non-Employee Director [Member] | Restricted-Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units vesting period, years     1 year