Fair Value of Financial Instruments (Schedule of Financial Instruments Measure at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Jan. 29, 2022	Jan. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market mutual funds	$ 115,528	$ 97,519
Marketable securities - mutual funds that fund deferred compensation	14,961
Total	130,489
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market mutual funds	115,528	97,519
Marketable securities - mutual funds that fund deferred compensation	14,961
Total	130,489
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market mutual funds	0	0
Marketable securities - mutual funds that fund deferred compensation	0
Total	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market mutual funds	0	$ 0
Marketable securities - mutual funds that fund deferred compensation	0
Total	$ 0