Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($)	12 Months Ended
	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