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Fair Value Measurements - Financial Assets Valued on a Recurring Basis (Details) - USD ($)
$ in Thousands
Aug. 03, 2019
Feb. 02, 2019
Aug. 04, 2018
Noncurrent Assets      
Deferred compensation plan $ 7,112 $ 6,644 $ 7,258
Total assets 70,844 69,342 69,134
Financial Liabilities:      
Long-term debt 50,000 57,500 61,250
Quoted Prices in Active Markets for Identical Assets (Level 1)      
Noncurrent Assets      
Deferred compensation plan 7,112 6,644 7,258
Total assets 7,398 7,355 7,407
Financial Liabilities:      
Long-term debt 0 0 0
Significant Other Observable Inputs (Level 2)      
Noncurrent Assets      
Deferred compensation plan 0 0 0
Total assets 63,446 61,987 61,727
Financial Liabilities:      
Long-term debt 50,000 57,500 60,929
Significant Unobservable Inputs (Level 3)      
Noncurrent Assets      
Deferred compensation plan 0 0 0
Total assets 0 0 0
Financial Liabilities:      
Long-term debt 0 0 0
Municipal securities      
Current Assets      
Marketable securities     3,423
Municipal securities | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Current Assets      
Marketable securities     0
Municipal securities | Significant Other Observable Inputs (Level 2)      
Current Assets      
Marketable securities     3,423
Municipal securities | Significant Unobservable Inputs (Level 3)      
Current Assets      
Marketable securities     0
U.S. government agencies      
Current Assets      
Marketable securities     6,773
U.S. government agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Current Assets      
Marketable securities     0
U.S. government agencies | Significant Other Observable Inputs (Level 2)      
Current Assets      
Marketable securities     6,773
U.S. government agencies | Significant Unobservable Inputs (Level 3)      
Current Assets      
Marketable securities     0
Corporate bonds      
Current Assets      
Marketable securities 60,476 60,281 46,542
Corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Current Assets      
Marketable securities 0 0 0
Corporate bonds | Significant Other Observable Inputs (Level 2)      
Current Assets      
Marketable securities 60,476 60,281 46,542
Corporate bonds | Significant Unobservable Inputs (Level 3)      
Current Assets      
Marketable securities 0 0 0
Commercial paper      
Current Assets      
Marketable securities 2,970 1,706 4,989
Commercial paper | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Current Assets      
Marketable securities 0 0 0
Commercial paper | Significant Other Observable Inputs (Level 2)      
Current Assets      
Marketable securities 2,970 1,706 4,989
Commercial paper | Significant Unobservable Inputs (Level 3)      
Current Assets      
Marketable securities 0 0 0
Money market accounts      
Current Assets      
Cash equivalents 286 711 149
Money market accounts | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Current Assets      
Cash equivalents 286 711 149
Money market accounts | Significant Other Observable Inputs (Level 2)      
Current Assets      
Cash equivalents 0 0 0
Money market accounts | Significant Unobservable Inputs (Level 3)      
Current Assets      
Cash equivalents $ 0 $ 0 $ 0