INVESTMENTS (Par Value) (Details) - Auction-rate securities [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Investment Holdings [Line Items]
Available-for-sale securities, par value	$ 7,975	$ 8,050
Municipal revenue bonds [Member]
Investment Holdings [Line Items]
Underlying Collateral	100% insured by AAA/AA/A-rated bond insurers
Available-for-sale securities, par value	$ 4,975
Percentage of bond insured by AAA/AA/A-rated bond issuers (percent)	100.00%
Municipal bond funds [Member]
Investment Holdings [Line Items]
Underlying Collateral	Fixed income instruments within issuers' money market funds
Available-for-sale securities, par value	$ 50
Student loan bonds [Member]
Investment Holdings [Line Items]
Underlying Collateral	Student loans guaranteed by state entities
Available-for-sale securities, par value	$ 2,950