Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($)	3 Months Ended
	May 02, 2020	May 04, 2019
us-gaap_StatementOfStockholdersEquityAbstract
Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities	$ (90,000)	$ 126,000
Stock Transactions, Parenthetical Disclosures [Abstract]
Dividends per share	$ 0.33	$ 0.33
Class A common stock shares sold through employee stock purchase plans	26,957	20,676
Exercised	0	0
Class A common stock shares issued through restricted stock grant plans	307,354	355,609
Repurchase of treasury shares	618,056	208,041