NET INCOME (LOSS) PER COMMON SHARE (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Apr. 29, 2017	Apr. 30, 2016
Basic and diluted net income per common share
Net income	$ 36,229	$ 25,985
Basic weighted average common shares (in shares)	17,613	19,200
Dilutive effect of stock awards (in shares)	788	369
Diluted weighted average common shares (in shares)	18,401	19,569
Antidilutive stock awards (in shares)	0	2

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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