Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($)	3 Months Ended
	May 04, 2019	May 05, 2018
us-gaap_StatementOfStockholdersEquityAbstract
Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities	$ 126,000	$ (122,000)
Stock Transactions, Parenthetical Disclosures [Abstract]
Dividends per share	$ 0.33	$ 0.33
Class A common stock shares sold through employee stock purchase plans	20,676	19,763
Exercised	0	0
Class A common stock shares issued through restricted stock grant plans	355,609	342,341
Retirement of treasury shares - retired shares	208,041	52,904