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Reconciliation of Net Earnings and Number of Shares Used in Basic and Diluted Earnings Per Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 04, 2019	Jul. 29, 2018	Aug. 04, 2019	Jul. 29, 2018
Earnings Per Share [Line Items]
Net Earnings, Basic	$ 62,648	$ 51,713	$ 115,304	$ 96,881
Net Earnings, Diluted	$ 62,648	$ 51,713	$ 115,304	$ 96,881
Weighted Average Shares, Basic	78,488	82,342	78,586	82,867
Weighted Average Shares, Effect of dilutive stock-based awards	982	825	1,047	652
Weighted Average Shares, Diluted	79,470	83,167	79,633	83,519
Earnings Per Share, Basic	$ 0.80	$ 0.63	$ 1.47	$ 1.17
Earnings Per Share, Diluted	$ 0.79	$ 0.62	$ 1.45	$ 1.16

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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