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v3.22.2.2

Summary of Significant Accounting Policies (Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands | Jul. 30, 2022 | Jan. 29, 2022 | Jul. 31, 2021
--- | --- | --- | ---
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost | $ 117,315 | $ 277,141 | $ 286,929
Gross Unrealized Gains | 0 | 0 | 0
Gross Unrealized Losses | 1,107 | 330 | 55
Fair Market Value | 116,208 | 276,811 | 286,874
Other Long-term Investments |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  | 37,717 | 1,104
Gross Unrealized Gains |  | 0 | 1
Gross Unrealized Losses |  | 199 | 0
Fair Market Value |  | 37,518 | 1,105
Fair Value, Inputs, Level 1 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Cash equivalents | 115,000 | 41,300 | 73,900
Corporate bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost | 110,692 | 236,069 | 234,909
Gross Unrealized Gains | 0 | 0 | 0
Gross Unrealized Losses | 1,104 | 286 | 49
Fair Market Value | 109,588 | 235,783 | 234,860
Municipal bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost | 6,623 | 41,072 | 52,020
Gross Unrealized Gains | 0 | 0 | 0
Gross Unrealized Losses | 3 | 44 | 6
Fair Market Value | $ 6,620 | 41,028 | 52,014
Corporate bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  | 37,717 |
Gross Unrealized Gains |  | 0 |
Gross Unrealized Losses |  | 199 |
Fair Market Value |  | $ 37,518 |
Municipal bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  |  | 1,104
Gross Unrealized Gains |  |  | 1
Gross Unrealized Losses |  |  | 0
Fair Market Value |  |  | $ 1,105

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