STOCK-BASED COMPENSATION (Details 1) - $ / shares	3 Months Ended	9 Months Ended
Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
2004 Employee Stock Purchase Plan [Member]
Expected volatility	86.10%	57.40%	82.20%	59.00%
Risk-free interest rate	1.00%	0.90%	1.00%	0.90%
Expected option life (in years)	9 months	9 months	6 months	6 months
Expected dividend yield	1.24%	1.19%	0.81%	0.79%
Weighted average fair value at grant date	$ 7.95	$ 4.01	$ 6.86	$ 3.74
Stock Option [Member]
Expected volatility	46.10%	33.40%	41.80%	33.30%
Risk-free interest rate	1.90%	1.30%	2.10%	1.40%
Expected option life (in years)	5 years 10 months 24 days	5 years 10 months 24 days	5 years 10 months 24 days	5 years 10 months 24 days
Expected dividend yield	1.98%	1.81%	1.87%	1.80%
Weighted average fair value at grant date	$ 2.44	$ 3.33	$ 4.20	$ 3.87

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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