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Summary of Stock Option Activity (Detail)
$ / shares in Units, shares in Thousands, $ in Thousands
6 Months Ended
Aug. 03, 2019
USD ($)
$ / shares
shares
Options  
Outstanding - beginning of period | shares 1,912
Granted | shares 807
Exercised | shares (124) [1]
Cancelled | shares (11)
Outstanding- end of period | shares 2,584
Vested and expected to vest-end of period | shares 2,279
Exercisable-end of period | shares 997 [2]
Weighted-Average Exercise Price  
Outstanding-beginning of period | $ / shares $ 16.75
Granted | $ / shares 21.26
Exercised | $ / shares 16.06 [1]
Cancelled | $ / shares 19.89
Outstanding-end of period | $ / shares 18.18
Vested and expected to vest-end of period | $ / shares 18.25
Exercisable-end of period | $ / shares $ 16.10 [2]
Weighted-Average Remaining Contractual Term (In years)  
Outstanding-end of period 5 years 4 months 24 days
Vested and expected to vest-end of period 5 years 4 months 24 days
Exercisable-end of period 4 years 6 months [2]
Aggregate Intrinsic Value  
Outstanding-end of period | $ $ 1,446
Vested and expected to vest-end of period | $ 510
Exercisable-end of period | $ $ 910 [2]
[1] Options exercised during the 26 weeks ended August 3, 2019 had exercise prices ranging from $14.59 to $23.53.  
[2] Options exercisable represent “in-the-money” vested options based upon the weighted-average exercise price of vested options compared to the Company’s stock price on August 3, 2019.