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Summary of Stock Option Activity (Detail)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Jan. 30, 2021
USD ($)
$ / shares
shares
Options  
Outstanding - beginning of period | shares 2,584
Granted | shares 1,705
Exercised | shares (193) [1]
Cancelled | shares (156)
Outstanding- end of period | shares 3,940
Vested and expected to vest-end of period | shares 2,890
Exercisable-end of period | shares 1,532 [2]
Weighted-Average Exercise Price  
Outstanding-beginning of period | $ / shares $ 18.18
Granted | $ / shares 10.30
Exercised | $ / shares 15.35 [1]
Cancelled | $ / shares 19.23
Outstanding-end of period | $ / shares 14.87
Vested and expected to vest-end of period | $ / shares 15.52
Exercisable-end of period | $ / shares $ 17.26 [2]
Weighted-Average Remaining Contractual Term (In years)  
Outstanding-end of period 4 years 10 months 24 days
Vested and expected to vest-end of period 3 years 3 months 18 days
Exercisable-end of period 1 year 4 months 24 days [2]
Aggregate Intrinsic Value  
Outstanding-end of period | $ $ 30,806
Vested and expected to vest-end of period | $ 20,439
Exercisable-end of period | $ $ 8,319 [2]
[1] Options exercised during Fiscal 2020 ranged in price from $17.25 to $20.15.
[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 January 30, 2021.