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Summary of Stock-Settled Stock Appreciation Right Activity (Detail) - USD ($)
 12 Months Ended
Jan. 28, 2018
Jan. 29, 2017
Jan. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance at January 28, 2018 (100% vested) $ 7,287,000 $ 5,237,000 $ 24,465,000
Stock-Settled Stock Appreciation Rights      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance at January 29, 2017 (100% vested) 411,710    
Granted, shares 0 0 0
Converted into common stock, shares (243,973)    
Cancelled, shares 0    
Balance at January 28, 2018 (100% vested) 167,737 411,710  
Balance at January 29, 2017 (100% vested) [1] $ 26.02    
Granted, weighted average conversion price [1] 0    
Converted into common stock, weighted average conversion price [1] 22.66    
Cancelled, weighted average conversion price [1] 0    
Balance at January 28, 2018, shares (100% vested) [1] $ 30.91 $ 26.02  
Balance, Weighted average contractual term remaining (years) 5 months 1 day    
Balance at January 28, 2018 (100% vested) [2] $ 3,774,000    
[1] Conversion price is equal to the market value on the date of grant.
[2] Intrinsic value for outstanding and vested rights is based on the excess of the market value of our common stock on the last business day of the fiscal year (or $53.41) over the conversion price.