Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	$ 36,498	$ 53,448
Net unrealized gain (loss)	319	571
Fair value - cash equivalents and marketable securities	36,817	54,019
Fair value - cash on hand	50,805	28,907
Fair value - cash, cash equivalents and marketable securities	87,622	82,926
Reported as:
Cash and cash equivalents	64,326	51,218	44,283	72,732
Short-term marketable securities	7,791	17,455
Long-term marketable securities	15,505	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	1,104	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	49,701	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	21,186	30,642
Net unrealized gain (loss)	308	537
Fair value - cash equivalents and marketable securities	21,494	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	13,521	21,032
Fair value - cash equivalents and marketable securities	13,521	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	505	515
Net unrealized gain (loss)	3	14
Fair value - cash equivalents and marketable securities	508	529
Fixed Income Funds [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	1,286	1,259
Net unrealized gain (loss)	8	20
Fair value - cash equivalents and marketable securities	$ 1,294	$ 1,279