Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Oct. 30, 2021	Jul. 31, 2021	May 01, 2021	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020
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Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities	$ (150)	$ (44)	$ (40)	$ (85)	$ 146	$ (90)
Stock Transactions, Parenthetical Disclosures [Abstract]
Dividends per share	$ 0.17	$ 0.11				$ 0.33
Class A common stock shares sold through employee stock purchase plans	1,957	1,336	19,248	21,234		26,957
Class A common stock shares issued through restricted stock grant plans	9,028	10,018	396,558	8,440	57,805	307,354
Retirement of treasury shares - retired shares	508,266	64,709	425,661	1,036,610		618,056

Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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Number of shares of common and preferred stock retired from treasury during the period.

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