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Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) | 12 Months Ended
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Feb. 02, 2019 | Feb. 03, 2018 | Jan. 28, 2017
us-gaap_StatementOfStockholdersEquityAbstract |  |  |
Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities | $ 77,000 | $ 28,000 | $ (608,000)
Stock Transactions, Parenthetical Disclosures [Abstract] |  |  |
Dividends per share | $ 1.32 | $ 1.32 | $ 1.29
Class A common stock shares sold through employee stock purchase plans | 44,770 | 34,238 | 17,455
Exercised | 8,051 | 4,025 |
Class A common stock shares issued through restricted stock grant plans | 341,744 | 169,907 | 96,465
Retirement of treasury shares - retired shares | 593,404 | 2,082,535 | 1,320,182

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