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FAIR VALUE MEASUREMENTS (Recurring Basis) (Details) - USD ($)
$ in Thousands
Feb. 02, 2019
Feb. 03, 2018
Mutual funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities (including mutual funds) $ 13,978 $ 15,154
Fair Value Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Totals   16,759
Fair Value Measurements, Recurring [Member] | Auction-rate securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-Sale Securities, Estimated Fair Value   1,605
Fair Value Measurements, Recurring [Member] | Mutual funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities (including mutual funds) 13,978 15,154
Fair Value Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Totals   15,154
Fair Value Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Auction-rate securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-Sale Securities, Estimated Fair Value   0
Fair Value Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mutual funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities (including mutual funds) 13,978 15,154
Fair Value Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Totals   50
Fair Value Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member] | Auction-rate securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-Sale Securities, Estimated Fair Value   50
Fair Value Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member] | Mutual funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities (including mutual funds) 0 0
Fair Value Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Totals   1,555
Fair Value Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Auction-rate securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-Sale Securities, Estimated Fair Value   1,555
Fair Value Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mutual funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities (including mutual funds) $ 0 $ 0