STOCK-BASED COMPENSATION (Details 1) - $ / shares	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
2004 Employee Stock Purchase Plan [Member]
Expected volatility	98.80%	60.30%	80.30%	59.80%
Risk-free interest rate	1.00%	0.90%	1.00%	0.90%
Expected option life (in years)	6 months	6 months	4 months 17 days	4 months 17 days
Expected dividend yield	0.78%	0.79%	0.59%	0.59%
Weighted average fair value at grant date	$ 7.67	$ 3.78	$ 6.31	$ 3.60
Stock Option [Member]
Expected volatility	43.90%	33.20%	41.50%	33.30%
Risk-free interest rate	2.00%	1.40%	2.10%	1.50%
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	1.87%	1.80%	1.86%	1.79%
Weighted average fair value at grant date	$ 4.99	$ 4.05	$ 4.35	$ 4.06