Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Nov. 02, 2013	Feb. 02, 2013	Oct. 27, 2012	Jan. 28, 2012
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	$ 43,988	$ 53,448
Net unrealized gain (loss)	376	571
Fair value - cash equivalents and marketable securities	44,364	54,019
Fair value - cash on hand	41,948	28,907
Fair value - cash, cash equivalents and marketable securities	86,312	82,926
Reported as:
Cash and cash equivalents	50,326	51,218	49,331	44,283
Short-term marketable securities	11,412	17,455
Long-term marketable securities	24,574	14,253
United States [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Fair value - cash on hand	1,954	1,441
Overseas [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Fair value - cash on hand	39,994	27,466
Corporate Bond Securities [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	33,841	30,642
Net unrealized gain (loss)	342	537
Fair value - cash equivalents and marketable securities	34,183	31,179
Money Market Funds [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	8,377	21,032
Fair value - cash equivalents and marketable securities	8,377	21,032
Municipal Bonds and Notes [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	509	515
Net unrealized gain (loss)	8	14
Fair value - cash equivalents and marketable securities	517	529
Fixed Income Funds [Member]
Note 2. Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	1,261	1,259
Net unrealized gain (loss)	26	20
Fair value - cash equivalents and marketable securities	$ 1,287	$ 1,279