Accumulated Unrealized Gains (Losses) - (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gain / (Loss)	$ 1,505	$ 1,852
Deferred Tax Benefit	(350)	(429)
Unrealized Net Gain / (Loss)	1,155	1,423
Short-Term Debt Investments
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gain / (Loss)	1,076	1,394
Deferred Tax Benefit	(250)	(323)
Unrealized Net Gain / (Loss)	826	1,071
Equity Investments
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gain / (Loss)	429	458
Deferred Tax Benefit	(100)	(106)
Unrealized Net Gain / (Loss)	$ 329	$ 352