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Fair Value Measurements (Details) - USD ($)
Aug. 04, 2018
Feb. 03, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]    
Long-term variable rate Credit Facilities $ 68,756,000 $ 73,899,000
Long-term credit facilities, current maturities 2,714,000 2,326,000
Level 2 [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Bank certificates of deposit 450,000 450,000
Long-term variable rate Credit Facilities 68,756,000 73,899,000
Level 3 [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Level 3 investments $ 0 $ 0