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INVESTMENTS (Schedule of Investments) (Details) - USD ($) $ in Thousands	Feb. 02, 2019	Feb. 03, 2018
Held-to-maturity Securities [Abstract]
Held-to-Maturity Securities, Amortized Cost or Par Value	$ 56,313	$ 55,527
Held-to-Maturity Securities, Gross Unrealized Gains	65	9
Held-to-Maturity Securities, Gross Unrealized Losses	(7)	(76)
Held-to-Maturity Securities, Other-than-Temporary Impairment	0	0
Held-to-Maturity Securities, Estimated Fair Value	56,371	55,460
Auction-rate securities [Member]
Available-for-sale Securities [Abstract]
Available-for-Sale Securities, Amortized Cost or Par Value		1,725
Available-for-Sale Securities, Gross Unrealized Gains		0
Available-for-Sale Securities, Gross Unrealized Losses		(120)
Available-for-Sale Securities, Other-than-Temporary Impairment		0
Available-for-Sale Securities, Estimated Fair Value		1,605
State and municipal bonds [Member]
Held-to-maturity Securities [Abstract]
Held-to-Maturity Securities, Amortized Cost or Par Value	56,313	55,527
Held-to-Maturity Securities, Gross Unrealized Gains	65	9
Held-to-Maturity Securities, Gross Unrealized Losses	(7)	(76)
Held-to-Maturity Securities, Other-than-Temporary Impairment	0	0
Held-to-Maturity Securities, Estimated Fair Value	56,371	55,460
Mutual funds [Member]
Trading Securities [Abstract]
Trading Securities, Amortized Cost or Par Value	13,364	13,746
Trading Securities, Gross Unrealized Gains	614	1,408
Trading Securities, Gross Unrealized Losses	0	0
Trading Securities, Other-than-Temporary Impairment	0	0
Trading Securities, Estimated Fair Value	$ 13,978	$ 15,154

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- Definition

The cost of debt and equity securities as of the balance sheet date, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, and collection of cash, but before other-than-temporary impairments recognized in earnings.

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The amount by which the fair value of an investment in debt and equity securities categorized as available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income at a point in time.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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