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Equity Awards - Summary of Restricted Stock Awards and Restricted Stock Units Activity (Detail) - Restricted Stock Awards and Restricted Stock Units [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
6 Months Ended
Aug. 04, 2018
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted Stock Awards/Units, Beginning Balance | shares 524
Restricted Stock Awards/Units, Granted | shares 262
Restricted Stock Awards/Units, Vested | shares (209)
Restricted Stock Awards/Units, Forfeited | shares (14)
Restricted Stock Awards/Units, Ending Balance | shares 563
Grant Date Weighted-Average Fair Value, Beginning Balance | $ / shares $ 20.11
Grant Date Weighted-Average Fair Value, Granted | $ / shares 23.93
Grant Date Weighted-Average Fair Value, Vested | $ / shares 20.84
Grant Date Weighted-Average Fair Value, Forfeited | $ / shares 20.27
Grant Date Weighted-Average Fair Value, Ending Balance | $ / shares $ 21.61
Intrinsic Value, Ending Balance | $ $ 13,249