Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($)	3 Months Ended
Apr. 30, 2022	May 01, 2021
us-gaap_StatementOfStockholdersEquityAbstract
Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities	$ 362,000	$ 40,000
Stock Transactions, Parenthetical Disclosures [Abstract]
Dividends per share	$ 0.17
Class A common stock shares sold through employee stock purchase plans	9,468	19,248
Class A common stock shares issued through restricted stock grant plans		396,558
Repurchase of treasury shares	609,928	425,661

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 of shares that have been repurchased during the period and are being held in treasury.

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