Consolidated Statements of Stockholders' Equity (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Statement of Stockholders' Equity
Tax impact unrealized gains (losses) on avallable-for-sale securities	$ 406	$ 112	$ (37)
Stock Transactions, Parenthetical Disclosures [Abstract]
Dividends per share	$ 0.875	$ 0.720	$ 0.660
Class A common stock shares sold through employee stock purchase plans	23,975	23,849	27,051
Class A common stock shares sold through stock option plans	4,875	42,675	43,600
Class A common stock shares issued through restricted stock grant plans	85,556	109,291	130,916
Repurchase of treasury shares - shares purchased	453,655	260,277	2,569
Retirement of treasury shares - retired shares	0	0	8,662,902